| anthill | (noun) a mound of earth made by ants as they dig their nest | Synonyms: formicary |
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| aspergill | (noun) a short-handled device with a globe containing a sponge; used for sprinkling holy water | Synonyms: aspersorium |
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| bill | (noun) the entertainment offered at a public presentation | - |
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| (noun) horny projecting mouth of a bird | Synonyms: beak, neb, nib, pecker |
| (noun) a brim that projects to the front to shade the eyes | Synonyms: eyeshade, peak, visor, vizor |
| (noun) a cutting tool with a sharp edge | Synonyms: billhook |
| (noun) a sign posted in a public place as an advertisement | Synonyms: card, notice, placard, poster, posting |
| (noun) an itemized statement of money owed for goods shipped or services rendered | Synonyms: account, invoice |
| (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: broadsheet, broadside, circular, flier, flyer, handbill, throwaway |
| (noun) a statute in draft before it becomes law | Synonyms: measure |
| (noun) a list of particulars (as a playbill or bill of fare) | - |
| (noun) a piece of paper money (especially one issued by a central bank) | Synonyms: bank bill, bank note, banker's bill, banknote, Federal Reserve note, government note, greenback, note |
| bluebill | (noun) diving ducks of North America having a bluish-grey bill | Synonyms: broadbill, scaup, scaup duck |
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| bluegill | (noun) important edible sunfish of eastern and central United States | Synonyms: Lepomis macrochirus |
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| boatbill | (noun) tropical American heron related to night herons | Synonyms: boat-billed heron, broadbill, Cochlearius cochlearius |
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| brill | (noun) European food fish | Synonyms: Scophthalmus rhombus |
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| broadbill | (noun) small birds of the Old World tropics having bright plumage and short wide bills | - |
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| (noun) freshwater duck of the Northern Hemisphere having a broad flat bill | Synonyms: Anas clypeata, shoveler, shoveller |
| (noun) diving ducks of North America having a bluish-grey bill | Synonyms: bluebill, scaup, scaup duck |
| (noun) tropical American heron related to night herons | Synonyms: boat-billed heron, boatbill, Cochlearius cochlearius |
| chill | (noun) coldness due to a cold environment | Synonyms: gelidity, iciness |
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| (noun) a sudden numbing dread | Synonyms: pall |
| (noun) an almost pleasurable sensation of fright | Synonyms: frisson, quiver, shiver, shudder, thrill, tingle |
| (noun) a sensation of cold that often marks the start of an infection and the development of a fever | Synonyms: shivering |
| cranesbill | (noun) any of numerous geraniums of the genus Geranium | Synonyms: crane's bill |
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| crossbill | (noun) finch with a bill whose tips cross when closed | Synonyms: Loxia curvirostra |
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| dill | (noun) aromatic threadlike foliage of the dill plant used as seasoning | Synonyms: dill weed |
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| (noun) aromatic Old World herb having aromatic threadlike foliage and seeds used as seasoning | Synonyms: Anethum graveolens |
| doorsill | (noun) the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway | Synonyms: doorstep, threshold |
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| downhill | (noun) a ski race down a trail | - |
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| (noun) the downward slope of a hill | - |
| drill | (noun) systematic training by multiple repetitions | Synonyms: exercise, practice, practice session, recitation |
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| (noun) (military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of arms | - |
| (noun) similar to the mandrill but smaller and less brightly colored | Synonyms: Mandrillus leucophaeus |
| (noun) a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows) | - |
| duckbill | (noun) small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae | Synonyms: duck-billed platypus, duckbilled platypus, Ornithorhynchus anatinus, platypus |
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| (noun) primitive fish of the Mississippi valley having a long paddle-shaped snout | Synonyms: paddlefish, Polyodon spathula |
| dunghill | (noun) a heap of dung or refuse | Synonyms: midden, muckheap, muckhill |
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| (noun) a foul or degraded condition | - |
| fill | (noun) a quantity sufficient to satisfy | - |
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| (noun) any material that fills a space or container | Synonyms: filling |
| foothill | (noun) a relatively low hill on the lower slope of a mountain | - |
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| frill | (noun) a strip of pleated material used as a decoration or a trim | Synonyms: flounce, furbelow, ruffle |
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| (noun) ornamental objects of no great value | Synonyms: falderol, folderal, gimcrack, gimcrackery, nonsense, trumpery |
| (noun) an external body part consisting of feathers or hair about the neck of a bird or other animal | Synonyms: ruff |
| (noun) (paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs | - |
| gill | (noun) respiratory organ of aquatic animals that breathe oxygen dissolved in water | Synonyms: branchia |
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| (noun) any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus | Synonyms: lamella |
| (noun) a United States liquid unit equal to 4 fluid ounces | - |
| (noun) a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters | - |
| ginmill | (noun) a room or establishment where alcoholic drinks are served over a counter | Synonyms: bar, barroom, saloon, taproom |
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| goodwill | (noun) a disposition to kindness and compassion | Synonyms: good will, grace |
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| (noun) the friendly hope that something will succeed | Synonyms: good will |
| (noun) (accounting) an intangible asset valued according to the advantage or reputation a business has acquired (over and above its tangible assets) | Synonyms: good will |
| grill | (noun) a framework of metal bars used as a partition or a grate | Synonyms: grille, grillwork |
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| (noun) a restaurant where food is cooked on a grill | Synonyms: grillroom |
| gristmill | (noun) a mill for grinding grain (especially the customer's own grain) | - |
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| handbill | (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, broadside, circular, flier, flyer, throwaway |
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| hawkbill | (noun) pugnacious tropical sea turtle with a hawk-like beak; source of food and the best tortoiseshell | Synonyms: Eretmochelys imbricata, hawksbill, hawksbill turtle, tortoiseshell turtle |
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| hawksbill | (noun) pugnacious tropical sea turtle with a hawk-like beak; source of food and the best tortoiseshell | Synonyms: Eretmochelys imbricata, hawkbill, hawksbill turtle, tortoiseshell turtle |
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| hill | (noun) (baseball) the slight elevation on which the pitcher stands | Synonyms: mound, pitcher's mound |
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| (noun) structure consisting of an artificial heap or bank usually of earth or stones | Synonyms: mound |
| (noun) a local and well-defined elevation of the land | - |
| hornbill | (noun) bird of tropical Africa and Asia having a very large bill surmounted by a bony protuberance; related to kingfishers | - |
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| ill | (noun) an often persistent bodily disorder or disease; a cause for complaining | Synonyms: ailment, complaint |
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| ivorybill | (noun) large black-and-white woodpecker of southern United States and Cuba having an ivory bill; nearly extinct | Synonyms: Campephilus principalis, ivory-billed woodpecker |
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| kill | (noun) the act of terminating a life | Synonyms: killing, putting to death |
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| (noun) the destruction of an enemy plane or ship or tank or missile | - |
| (noun) the body of an animal, or bodies of animals, killed by a person or another animal | - |
| krill | (noun) shrimp-like planktonic crustaceans; major source of food for e.g. baleen whales | - |
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| lambkill | (noun) North American dwarf shrub resembling mountain laurel but having narrower leaves and small red flowers; poisonous to young stock | Synonyms: Kalmia angustifolia, pig laurel, sheep laurel |
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| landfill | (noun) a low area that has been filled in | - |
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| lumbermill | (noun) a mill for dressing logs and lumber | Synonyms: sawmill |
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| mandrill | (noun) baboon of west Africa with a bright red and blue muzzle and blue hindquarters | Synonyms: Mandrillus sphinx |
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| mill | (noun) the act of grinding to a powder or dust | Synonyms: grind, pulverisation, pulverization |
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| (noun) machinery that processes materials by grinding or crushing | Synonyms: grinder, milling machinery |
| (noun) a plant consisting of one or more buildings with facilities for manufacturing | Synonyms: factory, manufactory, manufacturing plant |
| molehill | (noun) a mound of earth made by moles while burrowing | - |
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| muckhill | (noun) a heap of dung or refuse | Synonyms: dunghill, midden, muckheap |
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| nimblewill | (noun) slender branching American grass of some value for grazing in central United States | Synonyms: Muhlenbergia schreberi, nimble Will |
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| openbill | (noun) stork with a grooved bill whose upper and lower parts touch only at the base and tip | - |
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| overkill | (noun) any effort that seems to go farther than would be necessary to achieve its goal | - |
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| (noun) the capability to obliterate a target with more weapons (especially nuclear weapons) than are required | - |
| overspill | (noun) the occurrence of surplus liquid (as water) exceeding the limit or capacity | Synonyms: overflow, runoff |
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| (noun) the relocation of people from overcrowded cities; they are accommodated in new houses or apartments in smaller towns | - |
| pigswill | (noun) wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk | Synonyms: pigwash, slop, slops, swill |
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| pill | (noun) a dose of medicine in the form of a small pellet | Synonyms: lozenge, tab, tablet |
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| (noun) something that resembles a tablet of medicine in shape or size | - |
| (noun) a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception | Synonyms: anovulant, anovulatory drug, birth control pill, contraceptive pill, oral contraceptive, oral contraceptive pill |
| (noun) something unpleasant or offensive that must be tolerated or endured | - |
| (noun) a unpleasant or tiresome person | - |
| playbill | (noun) a theatrical program | - |
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| poorwill | (noun) goatsucker of western North America | Synonyms: Phalaenoptilus nuttallii |
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| quill | (noun) a stiff hollow protective spine on a porcupine or hedgehog | - |
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| (noun) the hollow spine of a feather | Synonyms: calamus, shaft |
| (noun) any of the larger wing or tail feathers of a bird | Synonyms: flight feather, pinion, quill feather |
| (noun) pen made from a bird's feather | Synonyms: quill pen |
| razorbill | (noun) black-and-white northern Atlantic auk having a compressed sharp-edged bill | Synonyms: Alca torda, razor-billed auk |
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| refill | (noun) a commercial product that refills a container with its appropriate contents | - |
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| (noun) a prescription drug that is provided again | - |
| rill | (noun) a small stream | Synonyms: rivulet, run, runnel, streamlet |
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| (noun) a small channel (as one formed by soil erosion) | - |
| roadkill | (noun) the dead body of an animal that has been killed on a road by a vehicle | - |
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| saddlebill | (noun) large black-and-white stork of tropical Africa; its red bill has a black band around the middle | Synonyms: Ephippiorhynchus senegalensis, jabiru |
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| sawbill | (noun) large crested fish-eating diving duck having a slender hooked bill with serrated edges | Synonyms: fish duck, merganser, sheldrake |
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| sawmill | (noun) a mill for dressing logs and lumber | Synonyms: lumbermill |
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| (noun) a large sawing machine | - |
| shill | (noun) a decoy who acts as an enthusiastic customer in order to stimulate the participation of others | - |
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| shoebill | (noun) large stork-like bird of the valley of the White Nile with a broad bill suggesting a wooden shoe | Synonyms: Balaeniceps rex, shoebird |
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| sill | (noun) structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure | - |
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| (noun) (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock | - |
| skill | (noun) ability to produce solutions in some problem domain | Synonyms: science |
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| (noun) an ability that has been acquired by training | Synonyms: accomplishment, acquirement, acquisition, attainment |
| spicemill | (noun) a mill for grinding spices | - |
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| spill | (noun) the act of allowing a fluid to escape | Synonyms: release, spillage |
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| (noun) a sudden drop from an upright position | Synonyms: fall, tumble |
| (noun) a channel that carries excess water over or around a dam or other obstruction | Synonyms: spillway, wasteweir |
| (noun) liquid that is spilled | - |
| spoonbill | (noun) wading birds having a long flat bill with a tip like a spoon | - |
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| squill | (noun) an Old World plant of the genus Scilla having narrow basal leaves and pink or blue or white racemose flowers | Synonyms: scilla |
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| (noun) having dense spikes of small white flowers and yielding a bulb with medicinal properties | Synonyms: sea onion, sea squill, Urginea maritima |
| (noun) bulb of the sea squill, which is sliced, dried, and used as an expectorant | - |
| standstill | (noun) an interruption of normal activity | Synonyms: stand, tie-up |
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| (noun) a situation in which no progress can be made or no advancement is possible | Synonyms: dead end, deadlock, impasse, stalemate |
| still | (noun) an apparatus used for the distillation of liquids; consists of a vessel in which a substance is vaporized by heat and a condenser where the vapor is condensed | - |
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| (noun) a static photograph (especially one taken from a movie and used for advertising purposes) | - |
| (noun) a plant and works where alcoholic drinks are made by distillation | Synonyms: distillery |
| (noun) (poetic) tranquil silence | Synonyms: hush, stillness |
| storksbill | (noun) any of various plants of the genus Erodium | Synonyms: heron's bill |
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| swill | (noun) wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk | Synonyms: pigswill, pigwash, slop, slops |
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| thill | (noun) one of two shafts extending from the body of a cart or carriage on either side of the animal that pulls it | - |
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| thornbill | (noun) any of various South American hummingbirds with a sharp pointed bill | - |
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| thrill | (noun) something that causes you to experience a sudden intense feeling or sensation | - |
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| (noun) the swift release of a store of affective force | Synonyms: bang, boot, charge, flush, kick, rush |
| (noun) an almost pleasurable sensation of fright | Synonyms: chill, frisson, quiver, shiver, shudder, tingle |
| till | (noun) a strongbox for holding cash | Synonyms: cashbox, money box |
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| (noun) a treasury for government funds | Synonyms: public treasury, trough |
| (noun) unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together | Synonyms: boulder clay |
| treadmill | (noun) a job involving drudgery and confinement | Synonyms: salt mine |
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| (noun) a mill that is powered by men or animals walking on a circular belt or climbing steps | Synonyms: tread-wheel, treadwheel |
| (noun) an exercise device consisting of an endless belt on which a person can walk or jog without changing place | - |
| trill | (noun) a note that alternates rapidly with another note a semitone above it | Synonyms: shake |
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| (noun) the articulation of a consonant (especially the consonant `r') with a rapid flutter of the tongue against the palate or uvula | - |
| twill | (noun) a cloth with parallel diagonal lines or ribs | - |
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| (noun) a weave used to produce the effect of parallel diagonal ribs | Synonyms: twill weave |
| uphill | (noun) the upward slope of a hill | - |
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| waybill | (noun) a receipt given by the carrier to the shipper acknowledging receipt of the goods being shipped and specifying the terms of delivery | Synonyms: bill of lading |
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| whippoorwill | (noun) American nocturnal goatsucker with grey-and-white plumage | Synonyms: Caprimulgus vociferus |
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| will | (noun) the capability of conscious choice and decision and intention | Synonyms: volition |
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| (noun) a fixed and persistent intent or purpose | - |
| (noun) a legal document declaring a person's wishes regarding the disposal of their property when they die | Synonyms: testament |
| windmill | (noun) generator that extracts usable energy from winds | Synonyms: aerogenerator, wind generator |
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| (noun) a mill that is powered by the wind | - |
| windowsill | (noun) the sill of a window; the horizontal member at the bottom of the window frame | - |
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| zill | (noun) one of a pair of small metallic cymbals worn on the thumb and middle finger; used in belly dancing in rhythm with the dance | - |
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