| grinder | (noun) a machine tool that polishes metal | - |
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| (noun) machinery that processes materials by grinding or crushing | Synonyms: mill, milling machinery |
| (noun) grinding tooth with a broad crown; located behind the premolars | Synonyms: molar |
| (noun) a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States | Synonyms: bomber, Cuban sandwich, hero, hero sandwich, hoagie, hoagy, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep |
| grinding | (noun) a harsh and strident sound (as of the grinding of gears) | - |
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| (noun) material resulting from the process of grinding | - |
| (noun) the wearing down of rock particles by friction due to water or wind or ice | Synonyms: abrasion, attrition, detrition |
| grindle | (noun) primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America | Synonyms: Amia calva, bowfin, dogfish |
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| grindstone | (noun) a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools | - |
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| gringo | (noun) a Latin American (disparaging) term for foreigners (especially Americans and Englishmen) | - |
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| grinner | (noun) a person who grins | - |
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| grinning | (noun) a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement | Synonyms: grin, smile, smiling |
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| haemosiderin | (noun) a granular brown substance composed of ferric oxide; left from the breakdown of hemoglobin; can be a sign of disturbed iron metabolism | Synonyms: hemosiderin |
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| hairiness | (noun) the quality of having hair | Synonyms: pilosity |
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| hairspring | (noun) a fine spiral spring that regulates the movement of the balance wheel in a timepiece | - |
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| hammering | (noun) the act of pounding (delivering repeated heavy blows) | Synonyms: hammer, pound, pounding |
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| hamstring | (noun) one of the tendons at the back of the knee | Synonyms: hamstring tendon |
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| handspring | (noun) an acrobatic feat in which a person goes from a standing position to a handstand and back again | - |
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| hankering | (noun) a yearning for something or to do something | Synonyms: yen |
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| headspring | (noun) the source of water from which a stream arises | Synonyms: fountainhead, head |
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| hearing | (noun) the act of hearing attentively | Synonyms: listening |
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| (noun) (law) a proceeding (usually by a court) where evidence is taken for the purpose of determining an issue of fact and reaching a decision based on that evidence | - |
| (noun) the ability to hear; the auditory faculty | Synonyms: audition, auditory modality, auditory sense, sense of hearing |
| (noun) a session (of a committee or grand jury) in which witnesses are called and testimony is taken | - |
| (noun) the range within which a voice can be heard | Synonyms: earreach, earshot |
| (noun) an opportunity to state your case and be heard | Synonyms: audience |
| heartstrings | (noun) your deepest feelings of love and compassion | - |
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| helleborine | (noun) any of several orchids of the genus Cephalanthera | - |
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| (noun) any of various orchids of the genus Epipactis | - |
| (noun) any of several small temperate and tropical orchids having mottled or striped leaves and spikes of small yellowish-white flowers in a twisted raceme | Synonyms: rattlesnake plantain |
| hemosiderin | (noun) a granular brown substance composed of ferric oxide; left from the breakdown of hemoglobin; can be a sign of disturbed iron metabolism | Synonyms: haemosiderin |
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| heparin | (noun) a polysaccharide produced in basophils (especially in the lung and liver) and that inhibits the activity of thrombin in coagulation of the blood; it (trade names Lipo-Hepin and Liquaemin) is used as an anticoagulant in the treatment of thrombosis and in heart surgery | Synonyms: Lipo-Hepin, Liquaemin |
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| herring | (noun) commercially important food fish of northern waters of both Atlantic and Pacific | Synonyms: Clupea harangus |
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| (noun) valuable flesh of fatty fish from shallow waters of northern Atlantic or Pacific; usually salted or pickled | - |
| herringbone | (noun) a twilled fabric with a herringbone pattern | - |
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| (noun) a pattern of columns of short parallel lines with all the lines in one column sloping one way and lines in adjacent columns sloping the other way; it is used in weaving, masonry, parquetry, embroidery | Synonyms: herringbone pattern |
| hoariness | (noun) great age (especially grey or white with age) | - |
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| (noun) a silvery-white color | Synonyms: frostiness |
| hollering | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holla, holler, hollo, holloa, roar, roaring, yowl |
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| honoring | (noun) conformity with law or custom or practice etc. | Synonyms: honouring, observance |
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| honouring | (noun) conformity with law or custom or practice etc. | Synonyms: honoring, observance |
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| hoofprint | (noun) a visible impression on a surface made by the hoof of an animal | Synonyms: hoof-mark, hoof mark |
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| humoring | (noun) the act of indulging or gratifying a desire | Synonyms: humouring, indulgence, indulging, pampering |
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| humouring | (noun) the act of indulging or gratifying a desire | Synonyms: humoring, indulgence, indulging, pampering |
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| hungriness | (noun) strong desire for something (not food or drink) | Synonyms: hunger, thirst, thirstiness |
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| (noun) prolonged unfulfilled desire or need | Synonyms: longing, yearning |
| (noun) a physiological need for food; the consequence of food deprivation | Synonyms: hunger |
| hyperintelligence | (noun) Remarkable intelligence, intelligence at or above and beyond the level of a genius. | Synonyms: superintelligence |
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| illusoriness | (noun) The quality of resulting from an illusion; of being deceptive, imaginary, unreal. | - |
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| imprint | (noun) a device produced by pressure on a surface | - |
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| (noun) a distinctive influence | - |
| (noun) an impression produced by pressure or printing | Synonyms: embossment |
| (noun) an identification of a publisher; a publisher's name along with the date and address and edition that is printed at the bottom of the title page | - |
| (noun) a concavity in a surface produced by pressing | Synonyms: depression, impression |
| imprinting | (noun) a learning process in early life whereby species specific patterns of behavior are established | - |
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| incurring | (noun) acquiring or coming into something (usually undesirable) | - |
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| indoctrination | (noun) teaching someone to accept doctrines uncritically | - |
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| infringement | (noun) a crime less serious than a felony | Synonyms: infraction, misdemeanor, misdemeanour, violation |
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| (noun) an act that disregards an agreement or a right | Synonyms: violation |
| ingathering | (noun) request for a sum of money | Synonyms: appeal, collection, solicitation |
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| inpouring | (noun) an inflow | Synonyms: inpour, inrush |
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| inquiring | (noun) a request for information | Synonyms: questioning |
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| introductoriness | (noun) The quality of being introducing; of giving a preview or idea of. | - |
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| involuntariness | (noun) the trait of being unwilling | Synonyms: unwillingness |
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| jabbering | (noun) rapid and indistinct speech | Synonyms: gabble, jabber |
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| jeering | (noun) showing your contempt by derision | Synonyms: jeer, mockery, scoff, scoffing |
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| jitteriness | (noun) the anxious feeling you have when you have the jitters | Synonyms: jumpiness, nervousness, restiveness |
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| labyrinth | (noun) complex system of paths or tunnels in which it is easy to get lost | Synonyms: maze |
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| (noun) a complex system of interconnecting cavities; concerned with hearing and equilibrium | Synonyms: inner ear, internal ear |
| labyrinthitis | (noun) inflammation of the inner ear; can cause vertigo and vomiting | Synonyms: otitis interna |
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| labyrinthodont | (noun) an amphibian of the superorder Labyrinthodontia | - |
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| latchstring | (noun) opener consisting of a string that can be passed through a hole in a door for raising the latch from outside | - |
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| latrine | (noun) a public toilet in a military area | - |
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| laundering | (noun) washing clothes and bed linens | - |
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| lecturing | (noun) teaching by giving a discourse on some subject (typically to a class) | Synonyms: lecture |
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| lemanderin | (noun) hybrid between mandarin orange and lemon having very acid fruit with orange peel | Synonyms: Citrus limonia, rangpur, rangpur lime |
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| lettering | (noun) letters inscribed (especially words engraved or carved) on something | Synonyms: inscription |
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| lingering | (noun) the act of tarrying | Synonyms: tarriance |
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| lockring | (noun) washer that prevents a nut from loosening | Synonyms: lock ring, lock washer |
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| lowering | (noun) the act of causing to become less | - |
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| (noun) the act of causing something to move to a lower level | Synonyms: letting down |
| luciferin | (noun) pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation | - |
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| lumbering | (noun) the trade of cutting or preparing or selling timber | - |
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| mainspring | (noun) the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism | - |
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| malingering | (noun) evading duty or work by pretending to be incapacitated | Synonyms: skulking |
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| mandarin | (noun) a somewhat flat reddish-orange loose skinned citrus of China | Synonyms: mandarin orange |
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| (noun) a high public official of imperial China | - |
| (noun) any high government official or bureaucrat | - |
| (noun) a member of an elite intellectual or cultural group | - |
| (noun) shrub or small tree having flattened globose fruit with very sweet aromatic pulp and thin yellow-orange to flame-orange rind that is loose and easily removed; native to southeastern Asia | Synonyms: Citrus reticulata, mandarin orange, mandarin orange tree |
| manufacturing | (noun) the act of making something (a product) from raw materials | Synonyms: fabrication, manufacture |
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| margarin | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarine, marge, oleo, oleomargarine |
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| (noun) a glyceryl ester of margaric acid | Synonyms: glycerol trimargarate |
| margarine | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarin, marge, oleo, oleomargarine |
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| marina | (noun) a fancy dock for small yachts and cabin cruisers | - |
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| marinade | (noun) mixtures of vinegar or wine and oil with various spices and seasonings; used for soaking foods before cooking | - |
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| marinara | (noun) sauce for pasta; contains tomatoes and garlic and herbs | - |
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| marine | (noun) a soldier who serves both on shipboard and on land | - |
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| mariner | (noun) a man who serves as a sailor | Synonyms: gob, Jack-tar, Jack, old salt, sea dog, seafarer, seaman, tar |
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| mastering | (noun) the act of making a master recording from which copies can be made | - |
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| (noun) becoming proficient in the use of something; having mastery of | - |
| measuring | (noun) the act or process of assigning numbers to phenomena according to a rule | Synonyms: measure, measurement, mensuration |
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| mepacrine | (noun) a drug (trade name Atabrine) used to treat certain worm infestations and once used to treat malaria | Synonyms: Atabrine, quinacrine, quinacrine hydrochloride |
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| mercaptopurine | (noun) a drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemia | Synonyms: Purinethol |
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| mercenariness | (noun) The state or condition of being motivated by private gain. | - |
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| meringue | (noun) sweet topping especially for pies made of beaten egg whites and sugar | - |
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| merino | (noun) white sheep originating in Spain and producing a heavy fleece of exceptional quality | Synonyms: merino sheep |
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| merriness | (noun) the trait of merry joking | Synonyms: humorousness, jocoseness, jocosity |
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| microprint | (noun) extremely small print, read by a magnifying device. | - |
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| minisubmarine | (noun) submersible vessel for one or two persons; for naval operations or underwater exploration | Synonyms: minisub |
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| miriness | (noun) The state or quality of being swampy or boggy. | - |
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| misprint | (noun) a mistake in printed matter resulting from mechanical failures of some kind | Synonyms: erratum, literal, literal error, typo, typographical error |
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| monitoring | (noun) the act of observing something (and sometimes keeping a record of it) | - |
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| mooring | (noun) (nautical) a line that holds an object (especially a boat) in place | Synonyms: mooring line |
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| (noun) a place where a craft can be made fast | Synonyms: berth, moorage, slip |
| motoring | (noun) the act of driving an automobile | - |
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| mountaineering | (noun) the activity of climbing a mountain | Synonyms: mountain climbing |
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| mudspringer | (noun) found in tropical coastal regions of Africa and Asia; able to move on land on strong pectoral fins | Synonyms: mudskipper |
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| murine | (noun) a rodent that is a member of the family Muridae | - |
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| murmuring | (noun) a complaint uttered in a low and indistinct tone | Synonyms: grumble, grumbling, murmur, mutter, muttering |
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| (noun) a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech | Synonyms: murmur, murmuration, mussitation, mutter, muttering |
| muttering | (noun) a complaint uttered in a low and indistinct tone | Synonyms: grumble, grumbling, murmur, murmuring, mutter |
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| (noun) a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech | Synonyms: murmur, murmuration, murmuring, mussitation, mutter |
| myringa | (noun) the membrane in the ear that vibrates to sound | Synonyms: eardrum, tympanic membrane, tympanum |
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| myringectomy | (noun) surgical removal of the eardrum | - |
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| myringoplasty | (noun) surgical repair of a perforated eardrum with a tissue graft | - |
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| myringotomy | (noun) surgical incision into the eardrum (to relieve pressure or release pus from the middle ear) | - |
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| nectarine | (noun) a variety or mutation of the peach that has a smooth skin | - |
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| (noun) variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh | Synonyms: nectarine tree, Prunus persica nectarina |
| neurinoma | (noun) tumor (usually benign) of the sheath surrounding a nerve | - |
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| neutering | (noun) the sterilization of an animal | Synonyms: altering, fixing |
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| neutrino | (noun) an elementary, electrically neutral particle with a very small mass | - |
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| newspapering | (noun) journalism practiced for the newspapers | - |
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| newsprint | (noun) cheap paper made from wood pulp and used for printing newspapers | Synonyms: newspaper |
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