| hail | (noun) enthusiastic greeting | - |
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| (noun) many objects thrown forcefully through the air | - |
| (noun) precipitation of ice pellets when there are strong rising air currents | - |
| (verb) greet enthusiastically or joyfully | Synonyms: herald |
| (verb) call for | - |
| (verb) praise vociferously | Synonyms: acclaim, herald |
| (verb) be a native of | Synonyms: come |
| (verb) precipitate as small ice particles | - |
| hairtail | (noun) long-bodied marine fishes having a long whiplike scaleless body and sharp teeth; closely related to snake mackerel | Synonyms: cutlassfish, frost fish |
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| halophil | (noun) archaebacteria requiring a salt-rich environment for growth and survival | Synonyms: halophile |
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| handrail | (noun) a railing at the side of a staircase or balcony to prevent people from falling | Synonyms: balusters, balustrade, banister, bannister |
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| hangnail | (noun) a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected | Synonyms: agnail |
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| headsail | (noun) any sail set forward of the foremast of a vessel | - |
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| hightail | (verb) retreat at full speed | Synonyms: high-tail |
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| hobnail | (noun) a short nail with a thick head; used to protect the soles of boots | - |
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| (verb) supply with hobnails | - |
| horsetail | (noun) perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in Northern Hemisphere; some in Africa and South America | - |
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| huamachil | (noun) common thorny tropical American tree having terminal racemes of yellow flowers followed by sickle-shaped or circinate edible pods and yielding good timber and a yellow dye and mucilaginous gum | Synonyms: camachile, manila tamarind, Pithecellobium dulce, wild tamarind |
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| hydrofoil | (noun) a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | Synonyms: hydroplane |
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| (noun) a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through | Synonyms: foil |
| il | (adjective) being nine more than forty | Synonyms: 49, forty-nine |
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| imperil | (verb) pose a threat to; present a danger to | Synonyms: endanger, jeopardise, jeopardize, menace, peril, threaten |
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| instil | (verb) enter drop by drop | Synonyms: instill |
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| jail | (noun) a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence) | Synonyms: clink, gaol, jailhouse, pokey, poky, slammer |
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| (verb) lock up or confine, in or as in a jail | Synonyms: gaol, immure, imprison, incarcerate, jug, lag, put away, put behind bars, remand |
| jonquil | (noun) widely cultivated ornamental plant native to southern Europe but naturalized elsewhere having fragrant yellow or white clustered flowers | Synonyms: Narcissus jonquilla |
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| (noun) often used colloquially for any yellow daffodil | - |
| kail | (noun) coarse curly-leafed cabbage | Synonyms: cole, kale |
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| (noun) a hardy cabbage with coarse curly leaves that do not form a head | Synonyms: borecole, Brassica oleracea acephala, cole, colewort, kale |
| kanchil | (noun) small chevrotain of southeastern Asia | Synonyms: Tragulus kanchil |
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| lentil | (noun) round flat seed of the lentil plant used for food | - |
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| (noun) widely cultivated Eurasian annual herb grown for its edible flattened seeds that are cooked like peas and also ground into meal and for its leafy stalks that are used as fodder | Synonyms: Lens culinaris, lentil plant |
| (noun) the fruit or seed of a lentil plant | - |
| lisinopril | (noun) an ACE inhibiting drug (trade names Prinivil or Zestril) administered as an antihypertensive and after heart attacks | Synonyms: Prinivil, Zestril |
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| lugsail | (noun) a sail with four corners that is hoisted from a yard that is oblique to the mast | Synonyms: lug |
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| mail | (noun) (Middle Ages) flexible armor made of interlinked metal rings | Synonyms: chain armor, chain armour, chain mail, ring armor, ring armour, ring mail |
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| (noun) a conveyance that transports the letters and packages that are conveyed by the postal system | - |
| (noun) the system whereby messages are transmitted via the post office | Synonyms: mail service, post, postal service |
| (noun) the bags of letters and packages that are transported by the postal service | - |
| (noun) any particular collection of letters or packages that is delivered | Synonyms: post |
| (verb) cause to be directed or transmitted to another place | Synonyms: post, send |
| (verb) send via the postal service | Synonyms: get off |
| mainsail | (noun) the lowermost sail on the mainmast | - |
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| mandril | (noun) any of various rotating shafts that serve as axes for larger rotating parts | Synonyms: arbor, mandrel, spindle |
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| microfossil | (noun) a fossil that must be studied microscopically | - |
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| mil | (noun) a unit of length equal to one thousandth of an inch; used to specify thickness (e.g., of sheets or wire) | - |
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| (noun) a metric unit of volume equal to one thousandth of a liter | Synonyms: cc, cubic centimeter, cubic centimetre, milliliter, millilitre, ml |
| (noun) an angular unit used in artillery; equal to 1/6400 of a complete revolution | - |
| (noun) a Cypriot monetary unit equal to one thousandth of a pound | - |
| (noun) a Swedish unit of length equivalent to 10 km | Synonyms: mile, Swedish mile |
| milfoil | (noun) ubiquitous strong-scented mat-forming Eurasian herb of wasteland, hedgerow or pasture having narrow serrate leaves and small usually white florets; widely naturalized in North America | Synonyms: Achillea millefolium, yarrow |
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| minoxidil | (noun) a vasodilator (trade name Loniten) used to treat severe hypertension; one side effect is hirsutism so it is also sold (trade name Rogaine) as a treatment for male-patterned baldness | Synonyms: Loniten, Rogaine |
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| moil | (verb) moisten or soil | - |
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| (verb) be agitated | Synonyms: boil, churn, roil |
| (verb) work hard | Synonyms: dig, drudge, fag, grind, labor, labour, toil, travail |
| monorail | (noun) a railway having a single track | - |
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| myofibril | (noun) one of many contractile filaments that make up a striated muscle fiber | Synonyms: myofibrilla, sarcostyle |
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| nail | (noun) a thin pointed piece of metal that is hammered into materials as a fastener | - |
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| (noun) horny plate covering and protecting part of the dorsal surface of the digits | - |
| (noun) a former unit of length for cloth equal to 1/16 of a yard | - |
| (verb) complete a pass | Synonyms: complete |
| (verb) attach something somewhere by means of nails | - |
| (verb) take into custody | Synonyms: apprehend, arrest, collar, cop, nab, pick up |
| (verb) hit with great force | Synonyms: blast, boom, smash |
| (verb) locate exactly | Synonyms: pinpoint |
| (verb) succeed at easily | Synonyms: ace, breeze through, pass with flying colors, sail through, sweep through |
| (verb) succeed in obtaining a position | Synonyms: nail down, peg |
| netmail | (verb) communicate electronically on the computer | Synonyms: e-mail, email |
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| neurofibril | (noun) Any of the long, thin, microscopic fibrils that run through the body of a neuron and extend into the axon and dendrites, giving the neuron support and shape. | - |
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| neuropil | (noun) the complex network of unmyelinated axones, dendrites, and glial branches that form the bulk of the central nervous system's grey matter and in which nerve cell bodies are embedded | Synonyms: neuropile |
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| neutrophil | (noun) the chief phagocytic leukocyte; stains with either basic or acid dyes | Synonyms: neutrophile |
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| nihil | (noun) (Latin) nil; nothing (as used by a sheriff after an unsuccessful effort to serve a writ) | - |
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| nil | (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cipher, cypher, goose egg, nada, naught, nix, nothing, null, zero, zilch, zip, zippo |
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| nitril | (noun) any of a class of organic compounds containing the cyano radical -CN | Synonyms: cyanide, nitrile |
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| nombril | (noun) the center point on a shield | - |
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| nonpareil | (adjective) eminent beyond or above comparison | Synonyms: matchless, one, one and only, peerless, unmatchable, unmatched, unrivaled, unrivalled |
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| (noun) colored beads of sugar used as a topping on e.g. candies and cookies | - |
| (noun) a flat disk of chocolate covered with beads of colored sugar | - |
| (noun) model of excellence or perfection of a kind; one having no equal | Synonyms: apotheosis, ideal, nonesuch, nonsuch, paragon, saint |
| nostril | (noun) either one of the two external openings to the nasal cavity in the nose | Synonyms: anterior naris |
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| oil | (noun) oil paint containing pigment that is used by an artist | Synonyms: oil color, oil colour |
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| (noun) any of a group of liquid edible fats that are obtained from plants | Synonyms: vegetable oil |
| (noun) a slippery or viscous liquid or liquefiable substance not miscible with water | - |
| (noun) a dark oil consisting mainly of hydrocarbons | Synonyms: crude, crude oil, fossil oil, petroleum, rock oil |
| (verb) administer an oil or ointment to; often in a religious ceremony of blessing | Synonyms: anele, anoint, embrocate, inunct |
| (verb) cover with oil, as if by rubbing | - |
| orchil | (noun) any of various lecanoras that yield the dye archil | Synonyms: archil |
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| (noun) a purplish dye obtained from orchil lichens | Synonyms: archil, cudbear |
| outsail | (verb) sail faster or better than | - |
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| overboil | (verb) overflow or cause to overflow while boiling | Synonyms: boil over |
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| (verb) boil excessively | - |
| oxtail | (noun) the skinned tail of cattle; used especially for soups | - |
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| pail | (noun) a roughly cylindrical vessel that is open at the top | Synonyms: bucket |
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| (noun) the quantity contained in a pail | Synonyms: pailful |
| parasail | (noun) parachute that will lift a person up into the air when it is towed by a motorboat or a car | - |
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| parboil | (verb) cook (vegetables) briefly | Synonyms: blanch |
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| pastil | (noun) a medicated lozenge used to soothe the throat | Synonyms: cough drop, pastille, troche |
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| pencil | (noun) a thin cylindrical pointed writing implement; a rod of marking substance encased in wood | - |
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| (noun) a cosmetic in a long thin stick; designed to be applied to a particular part of the face | - |
| (noun) a figure formed by a set of straight lines or light rays meeting at a point | - |
| (noun) graphite (or a similar substance) used in such a way as to be a medium of communication | - |
| (verb) write, draw, or trace with a pencil | - |
| pentail | (noun) brown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal third; of Malaysia | Synonyms: pen-tail, pen-tailed tree shrew |
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| peril | (noun) a venture undertaken without regard to possible loss or injury | Synonyms: danger, risk |
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| (noun) a source of danger; a possibility of incurring loss or misfortune | Synonyms: endangerment, hazard, jeopardy, risk |
| (noun) a state of danger involving risk | Synonyms: riskiness |
| (verb) put in a dangerous, disadvantageous, or difficult position | Synonyms: endanger, expose, queer, scupper |
| (verb) pose a threat to; present a danger to | Synonyms: endanger, imperil, jeopardise, jeopardize, menace, threaten |
| pigtail | (noun) a plait of braided hair | - |
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| pintail | (noun) long-necked river duck of the Old and New Worlds having elongated central tail feathers | Synonyms: Anas acuta, pin-tailed duck |
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| pistil | (noun) the female ovule-bearing part of a flower composed of ovary and style and stigma | - |
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| ponytail | (noun) a hair style that draws the hair back so that it hangs down in back of the head like a pony's tail | - |
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| prevail | (verb) use persuasion successfully | - |
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| (verb) prove superior | Synonyms: triumph |
| (verb) continue to exist | Synonyms: die hard, endure, persist, run |
| (verb) be valid, applicable, or true | Synonyms: hold, obtain |
| (verb) be larger in number, quantity, power, status or importance | Synonyms: dominate, predominate, reign, rule |
| propylthiouracil | (noun) a crystalline compound used as an antithyroid drug in the treatment of goiter | - |
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| pupil | (noun) the contractile aperture in the center of the iris of the eye; resembles a large black dot | - |
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| (noun) a learner who is enrolled in an educational institution | Synonyms: educatee, student |
| (noun) a young person attending school (up through senior high school) | Synonyms: school-age child, schoolchild |
| quail | (noun) small gallinaceous game birds | - |
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| (noun) flesh of quail; suitable for roasting or broiling if young; otherwise must be braised | - |
| (verb) draw back, as with fear or pain | Synonyms: cringe, flinch, funk, recoil, shrink, squinch, wince |
| rail | (noun) any of numerous widely distributed small wading birds of the family Rallidae having short wings and very long toes for running on soft mud | - |
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| (noun) a horizontal bar (usually of wood or metal) | - |
| (noun) a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll | Synonyms: rails, runway, track |
| (noun) a barrier consisting of a horizontal bar and supports | Synonyms: railing |
| (noun) short for railway | - |
| (verb) complain bitterly | Synonyms: inveigh |
| (verb) spread negative information about | Synonyms: revile, vilify, vituperate |
| (verb) criticize severely | Synonyms: fulminate |
| (verb) fish with a handline over the rails of a boat | - |
| (verb) lay with rails | - |
| (verb) travel by rail or train | Synonyms: train |
| (verb) separate with a railing | Synonyms: rail off |
| (verb) convey (goods etc.) by rails | - |
| (verb) provide with rails | - |
| (verb) enclose with rails | Synonyms: rail in |
| ramipril | (noun) an ACE inhibitor (trade name Altace) used to treat high blood pressure or in some patients who have had a heart attack | Synonyms: Altace |
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| rattail | (noun) deep-sea fish with a large head and body and long tapering tail | Synonyms: grenadier, rattail fish |
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| reassail | (verb) assail again | - |
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| recoil | (noun) a movement back from an impact | Synonyms: backlash, rebound, repercussion |
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| (noun) the backward jerk of a gun when it is fired | Synonyms: kick |
| (verb) spring back, as from a forceful thrust | Synonyms: kick, kick back |
| (verb) draw back, as with fear or pain | Synonyms: cringe, flinch, funk, quail, shrink, squinch, wince |
| (verb) spring back; spring away from an impact | Synonyms: bounce, bound, rebound, resile, reverberate, ricochet, spring, take a hop |
| (verb) come back to the originator of an action with an undesired effect | Synonyms: backfire, backlash |
| redtail | (noun) dark brown American hawk species having a reddish-brown tail | Synonyms: Buteo jamaicensis, red-tailed hawk |
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| (noun) European songbird with a reddish breast and tail; related to Old World robins | Synonyms: redstart |
| retail | (noun) the selling of goods to consumers; usually in small quantities and not for resale | - |
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| (adverb) at a retail price | - |
| (verb) sell on the retail market | - |
| (verb) be sold at the retail level | - |
| ridgil | (noun) a colt with undescended testicles | Synonyms: ridgel, ridgeling, ridgling |
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| ringtail | (noun) an immature golden eagle | - |
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| (noun) North American raccoon | Synonyms: common raccoon, common racoon, coon, Procyon lotor |
| (noun) raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings | Synonyms: Bassariscus astutus, bassarisk, cacomistle, cacomixle, civet cat, coon cat, miner's cat, raccoon fox, ring-tailed cat |
| (noun) monkey of Central America and South America having thick hair on the head that resembles a monk's cowl | Synonyms: capuchin, Cebus capucinus |
| rockfoil | (noun) any of various plants of the genus Saxifraga | Synonyms: breakstone, saxifrage |
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| roil | (verb) make turbid by stirring up the sediments of | Synonyms: rile |
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| (verb) be agitated | Synonyms: boil, churn, moil |
| sail | (noun) an ocean trip taken for pleasure | Synonyms: cruise |
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| (noun) a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel | Synonyms: canvas, canvass, sheet |
| (noun) any structure that resembles a sail | - |
| (verb) travel on water propelled by wind | - |
| (verb) move with sweeping, effortless, gliding motions | Synonyms: sweep |
| (verb) travel on water propelled by wind or by other means | Synonyms: navigate, voyage |
| (verb) traverse or travel on (a body of water) | - |
| scissortail | (noun) grey flycatcher of the southwestern United States and Mexico and Central America having a long forked tail and white breast and salmon and scarlet markings | Synonyms: Muscivora-forficata, scissortailed flycatcher |
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| seasnail | (noun) small tadpole-shaped cold-water fishes with pelvic fins forming a sucker; related to lumpfish | Synonyms: Liparis liparis, sea snail, snailfish |
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| (noun) any of several creeping marine gastropods with a spirally coiled shell: whelks, tritons, moon shells, neritids | - |
| serail | (noun) living quarters reserved for wives and concubines and female relatives in a Muslim household | Synonyms: hareem, harem, seraglio |
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| shirttail | (noun) fabric forming the tail of a shirt | - |
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| (noun) a brief addendum at the end of a newspaper article | - |
| sildenafil | (noun) virility drug (trade name Viagra) used to treat erectile dysfunction in men | Synonyms: sildenafil citrate, Viagra |
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| skysail | (noun) the sail above the royal on a square-rigger | - |
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| snail | (noun) freshwater or marine or terrestrial gastropod mollusk usually having an external enclosing spiral shell | - |
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| (noun) edible terrestrial snail usually served in the shell with a sauce of melted butter and garlic | Synonyms: escargot |
| (verb) gather snails | - |
| soil | (noun) the geographical area under the jurisdiction of a sovereign state | Synonyms: territory |
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| (noun) material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use) | Synonyms: ground, land |
| (noun) anything regarded as making something unclean | Synonyms: dirt, filth, grease, grime, grunge, stain |
| (noun) the part of the earth's surface consisting of humus and disintegrated rock | Synonyms: dirt |
| (verb) make soiled, filthy, or dirty | Synonyms: begrime, bemire, colly, dirty, grime |
| spandril | (noun) an approximately triangular surface area between two adjacent arches and the horizontal plane above them | Synonyms: spandrel |
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| spoil | (noun) the act of stripping and taking by force | Synonyms: despoilation, despoilment, despoliation, spoilation, spoliation |
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| (noun) the act of spoiling something by causing damage to it | Synonyms: spoilage, spoiling |
| (noun) (usually plural) valuables taken by violence (especially in war) | - |
| (verb) become unfit for consumption or use | Synonyms: go bad |
| (verb) alter from the original | Synonyms: corrupt |
| (verb) make imperfect | Synonyms: deflower, impair, mar, vitiate |
| (verb) destroy and strip of its possession | Synonyms: despoil, plunder, rape, violate |
| (verb) have a strong desire or urge to do something | Synonyms: itch |
| (verb) hinder or prevent (the efforts, plans, or desires) of | Synonyms: baffle, bilk, cross, foil, frustrate, queer, scotch, thwart |
| (verb) treat with excessive indulgence | Synonyms: baby, cocker, coddle, cosset, featherbed, indulge, mollycoddle, pamper |
| (verb) make a mess of, destroy or ruin | Synonyms: ball up, blow, bobble, bodge, bollix, bollix up, bollocks, bollocks up, botch, botch up, bumble, bungle, flub, fluff, foul up, fuck up, fumble, louse up, mess up, mishandle, muck up, muff, screw up |
| sprigtail | (noun) large grouse of prairies and open forests of western North America | Synonyms: Pedioecetes phasianellus, sharp-tailed grouse, sprig tail |
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| springtail | (noun) any of numerous minute wingless primitive insects possessing a special abdominal appendage that allows the characteristic nearly perpetual springing pattern; found in soil rich in organic debris or on the surface of snow or water | Synonyms: collembolan |
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| spritsail | (noun) a fore-and-aft sail extended by a sprit | - |
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| squaretail | (noun) sluggish square-tailed fish armored with tough bony scales; of deep warm waters | - |
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| staysail | (noun) a fore-and-aft sail set on a stay (as between two masts) | - |
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| stencil | (noun) a sheet of material (metal, plastic, cardboard, waxed paper, silk, etc.) that has been perforated with a pattern (printing or a design); ink or paint can pass through the perforations to create the printed pattern on the surface below | - |
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| (verb) mark or print with a stencil | - |
| subsoil | (noun) the layer of soil between the topsoil and bedrock | Synonyms: undersoil |
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| surveil | (verb) keep under surveillance | Synonyms: follow, survey |
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| swallowtail | (noun) a man's full-dress jacket with two long tapering tails at the back | Synonyms: morning coat, swallow-tailed coat |
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| swordtail | (noun) freshwater fish of Central America having a long swordlike tail; popular aquarium fish | Synonyms: helleri, topminnow, Xyphophorus helleri |
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| tadalafil | (noun) virility drug (trade name Cialis) used to treat erectile dysfunction in men | Synonyms: Cialis |
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| taffrail | (noun) the railing around the stern of a ship | - |
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| tail | (noun) the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body | - |
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| (noun) the rear part of a ship | Synonyms: after part, poop, quarter, stern |
| (noun) the rear part of an aircraft | Synonyms: empennage, tail assembly |
| (noun) (usually plural) the reverse side of a coin that does not bear the representation of a person's head | - |
| (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail end, tooshie, tush |
| (noun) a spy employed to follow someone and report their movements | Synonyms: shadow, shadower |
| (noun) any projection that resembles the tail of an animal | Synonyms: tail end |
| (noun) the time of the last part of something | Synonyms: fag end, tail end |
| (verb) remove or shorten the tail of an animal | Synonyms: bob, dock |
| (verb) remove the stalk of fruits or berries | - |
| (verb) go after with the intent to catch | Synonyms: chase, chase after, dog, give chase, go after, tag, track, trail |
| telsontail | (noun) any of several minute primitive wingless and eyeless insects having a cone-shaped head; inhabit damp soil or decaying organic matter | Synonyms: proturan |
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| tendril | (noun) slender stem-like structure by which some twining plants attach themselves to an object for support | - |
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| thiouracil | (noun) depresses the function of the thyroid gland | - |
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