| abele | (noun) a poplar that is widely cultivated in the United States; has white bark and leaves with whitish undersurfaces | Synonyms: aspen poplar, Populus alba, silver-leaved poplar, white aspen, white poplar |
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| acidophile | (noun) an organism that thrives in a relatively acid environment | Synonyms: acidophil |
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| acrylonitrile | (noun) a colorless liquid unsaturated nitrile made from propene | Synonyms: propenonitrile, vinyl cyanide |
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| aerophile | (noun) a lover of aviation | - |
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| aisle | (noun) passageway between seating areas as in an auditorium or passenger vehicle or between areas of shelves of goods as in stores | Synonyms: gangway |
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| (noun) part of a church divided laterally from the nave proper by rows of pillars or columns | - |
| (noun) a long narrow passage (as in a cave or woods) | - |
| ale | (noun) a general name for beer made with a top fermenting yeast; in some of the United States an ale is (by law) a brew of more than 4% alcohol by volume | - |
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| allele | (noun) (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character | Synonyms: allelomorph |
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| amarelle | (noun) pale red sour cherry with colorless or nearly colorless juice | - |
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| (noun) any of several cultivated sour cherry trees bearing pale red fruit with colorless juice | Synonyms: Prunus cerasus caproniana |
| amble | (noun) a leisurely walk (usually in some public place) | Synonyms: perambulation, promenade, saunter, stroll |
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| amphibole | (noun) a mineral or mineral variety belonging to the amphibole group | - |
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| ampoule | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampul, ampule, phial, vial |
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| ampule | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampoule, ampul, phial, vial |
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| anethole | (noun) an organic compound that is widely used as a flavoring substance. | Synonyms: anise camphor |
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| angle | (noun) a biased way of looking at or presenting something | Synonyms: slant |
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| (noun) the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians | - |
| anglophile | (noun) an admirer of England and things English | Synonyms: anglophil |
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| animalcule | (noun) microscopic organism such as an amoeba or paramecium | Synonyms: animalculum |
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| ankle | (noun) a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus | Synonyms: ankle joint, articulatio talocruralis, mortise joint |
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| anole | (noun) small arboreal tropical American insectivorous lizards with the ability to change skin color | Synonyms: American chameleon, Anolis carolinensis |
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| antiparticle | (noun) a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy | - |
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| apostle | (noun) an ardent early supporter of a cause or reform | - |
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| appendicle | (noun) a small appendage | - |
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| apple | (noun) fruit with red or yellow or green skin and sweet to tart crisp whitish flesh | - |
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| (noun) native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits | Synonyms: Malus pumila, orchard apple tree |
| argyle | (noun) a sock knitted or woven with an argyle design | Synonyms: argyll |
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| (noun) a design consisting of a pattern of varicolored diamonds on a solid background (originally for knitted articles); patterned after the tartan of a clan in western Scotland | Synonyms: argyll |
| (noun) a covered gravy holder of silver or other metal containing a detachable central vessel for hot water to keep the gravy warm | Synonyms: argyll |
| armhole | (noun) a hole through which you put your arm and where a sleeve can be attached | - |
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| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| arteriole | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriola, capillary artery |
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| article | (noun) one of a class of artifacts | - |
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| (noun) nonfictional prose forming an independent part of a publication | - |
| (noun) (grammar) a determiner that may indicate the specificity of reference of a noun phrase | - |
| (noun) a separate section of a legal document (as a statute or contract or will) | Synonyms: clause |
| asshole | (noun) vulgar slang for anus | Synonyms: arse, arsehole, bunghole |
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| (noun) insulting terms of address for people who are stupid or irritating or ridiculous | Synonyms: bastard, cocksucker, dickhead, mother fucker, motherfucker, prick, shit, SOB, son of a bitch, whoreson |
| asystole | (noun) absence of systole; failure of the ventricles of the heart to contract (usually caused by ventricular fibrillation) with consequent absence of the heart beat leading to oxygen lack and eventually to death | Synonyms: cardiac arrest, cardiopulmonary arrest |
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| atole | (noun) eaten as mush or as a thin gruel | - |
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| audible | (noun) a football play is changed orally after both teams have assumed their positions at the line of scrimmage | - |
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| audile | (noun) one whose mental imagery is auditory rather than visual or motor | - |
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| aureole | (noun) an indication of radiant light drawn around the head of a saint | Synonyms: aura, gloriole, glory, halo, nimbus |
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| (noun) the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse | Synonyms: corona |
| auricle | (noun) a small conical pouch projecting from the upper anterior part of each atrium of the heart | Synonyms: atrial auricle, auricula atrii |
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| (noun) the externally visible cartilaginous structure of the external ear | Synonyms: ear, pinna |
| automobile | (noun) a motor vehicle with four wheels; usually propelled by an internal combustion engine | Synonyms: auto, car, machine, motorcar |
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| axle | (noun) a shaft on which a wheel rotates | - |
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| babble | (noun) gibberish resembling the sounds of a baby | Synonyms: babbling, lallation |
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| baffle | (noun) a flat plate that controls or directs the flow of fluid or energy | Synonyms: baffle board |
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| bagatelle | (noun) a table game in which short cues are used to knock balls into holes that are guarded by wooden pegs; penalties are incurred if the pegs are knocked over | Synonyms: bar billiards |
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| (noun) something of little value or significance | Synonyms: fluff, frippery, frivolity |
| (noun) a light piece of music for piano | - |
| bakeapple | (noun) creeping raspberry of north temperate regions with yellow or orange berries | Synonyms: baked-apple berry, cloudberry, dwarf mulberry, Rubus chamaemorus, salmonberry |
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| bale | (noun) a large bundle bound for storage or transport | - |
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| bangle | (noun) cheap showy jewelry or ornament on clothing | Synonyms: bauble, fallal, gaud, gewgaw, novelty, trinket |
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| (noun) jewelry worn around the wrist for decoration | Synonyms: bracelet |
| barcarole | (noun) a boating song sung by Venetian gondoliers | Synonyms: barcarolle |
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| barcarolle | (noun) a boating song sung by Venetian gondoliers | Synonyms: barcarole |
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| barnacle | (noun) marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces | Synonyms: cirriped, cirripede |
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| (noun) European goose smaller than the brant; breeds in the far north | Synonyms: barnacle goose, Branta leucopsis |
| bascule | (noun) a structure or device in which one end is counterbalanced by the other (on the principle of the seesaw) | - |
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| basophile | (noun) a leukocyte with basophilic granules easily stained by basic stains | Synonyms: basophil |
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| bastille | (noun) a jail or prison (especially one that is run in a tyrannical manner) | - |
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| battle | (noun) a hostile meeting of opposing military forces in the course of a war | Synonyms: conflict, engagement, fight |
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| (noun) an energetic attempt to achieve something | Synonyms: struggle |
| (noun) an open clash between two opposing groups (or individuals) | Synonyms: conflict, struggle |
| bauble | (noun) cheap showy jewelry or ornament on clothing | Synonyms: bangle, fallal, gaud, gewgaw, novelty, trinket |
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| (noun) a mock scepter carried by a court jester | - |
| beadle | (noun) a minor parish official who serves a ceremonial function | - |
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| beagle | (noun) a small short-legged smooth-coated breed of hound | - |
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| beetle | (noun) insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings | - |
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| (noun) a tool resembling a hammer but with a large head (usually wooden); used to drive wedges or ram down paving stones or for crushing or beating or flattening or smoothing | Synonyms: mallet |
| belle | (noun) a young woman who is the most charming and beautiful of several rivals | - |
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| bible | (noun) a book regarded as authoritative in its field | - |
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| bibliophile | (noun) someone who loves (and usually collects) books | Synonyms: book lover, booklover |
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| bibliopole | (noun) a dealer in secondhand books (especially rare or curious books) | Synonyms: bibliopolist |
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| bicycle | (noun) a wheeled vehicle that has two wheels and is moved by foot pedals | Synonyms: bike, cycle, wheel |
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| bile | (noun) a digestive juice secreted by the liver and stored in the gallbladder; aids in the digestion of fats | Synonyms: gall |
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| bingle | (noun) a base hit on which the batter stops safely at first base | Synonyms: single |
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| binnacle | (noun) a nonmagnetic housing for a ship's compass (usually in front of the helm) | - |
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| blackbeetle | (noun) dark brown cockroach originally from orient now nearly cosmopolitan in distribution | Synonyms: Asiatic cockroach, Blatta orientalis, oriental cockroach, oriental roach |
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| blastocele | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocoel, blastocoele, cleavage cavity, segmentation cavity |
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| blastocoele | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocele, blastocoel, cleavage cavity, segmentation cavity |
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| bloodmobile | (noun) a motor vehicle equipped to collect blood donations | - |
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| blowhole | (noun) a hole for the escape of gas or air | Synonyms: vent-hole, vent, venthole |
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| (noun) the spiracle of a cetacean located far back on the skull | - |
| bluebottle | (noun) blowfly with iridescent blue body; makes a loud buzzing noise in flight | Synonyms: Calliphora vicina |
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| (noun) an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers | Synonyms: bachelor's button, Centaurea cyanus, cornflower |
| bobble | (noun) the momentary juggling of a batted or thrown baseball | - |
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| bole | (noun) the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber | Synonyms: tree trunk, trunk |
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| (noun) a soft oily clay used as a pigment (especially a reddish brown pigment) | - |
| boodle | (noun) a gambling card game in which chips are placed on the ace and king and queen and jack of separate suits (taken from a separate deck); a player plays the lowest card of a suit in his hand and successively higher cards are played until the sequence stops; the player who plays a card matching one in the layout wins all the chips on that card | Synonyms: Chicago, Michigan, Newmarket, stops |
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| (noun) informal terms for money | Synonyms: bread, cabbage, clams, dinero, dough, gelt, kale, lettuce, lolly, loot, lucre, moolah, pelf, scratch, shekels, simoleons, sugar, wampum |
| bookmobile | (noun) a van with shelves of books; serves as a mobile library or bookstore | - |
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| boondoggle | (noun) work of little or no value done merely to look busy | - |
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| borecole | (noun) a hardy cabbage with coarse curly leaves that do not form a head | Synonyms: Brassica oleracea acephala, cole, colewort, kail, kale |
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| bottle | (noun) a glass or plastic vessel used for storing drinks or other liquids; typically cylindrical without handles and with a narrow neck that can be plugged or capped | - |
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| (noun) a vessel fitted with a flexible teat and filled with milk or formula; used as a substitute for breast feeding infants and very young children | Synonyms: feeding bottle, nursing bottle |
| (noun) the quantity contained in a bottle | Synonyms: bottleful |
| boucle | (noun) a fabric of uneven yarn that has an uneven knobby effect | - |
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| boule | (noun) an inlaid furniture decoration; tortoiseshell and yellow and white metal form scrolls in cabinetwork | Synonyms: boulle, buhl |
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| boulle | (noun) an inlaid furniture decoration; tortoiseshell and yellow and white metal form scrolls in cabinetwork | Synonyms: boule, buhl |
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| bracteole | (noun) a small bract | Synonyms: bractlet |
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| braille | (noun) a point system of writing in which patterns of raised dots represent letters and numerals | - |
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| bramble | (noun) any of various rough thorny shrubs or vines | - |
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| breakable | (noun) an article that is fragile and easily broken | - |
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| bricole | (noun) catapult operated by manpower pulling cords attached to a lever and slign to launch projectiles | Synonyms: mangonel, traction trebuchet |
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| bridle | (noun) the act of restraining power or action or limiting excess | Synonyms: check, curb |
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| (noun) headgear for a horse; includes a headstall and bit and reins to give the rider or driver control | - |
| bristle | (noun) a stiff hair | - |
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| (noun) a stiff fiber (coarse hair or filament); natural or synthetic | - |
| brittle | (noun) caramelized sugar cooled in thin sheets | Synonyms: toffee, toffy |
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| bronchiole | (noun) any of the smallest bronchial ducts; ending in alveoli | - |
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| bubble | (noun) a dome-shaped covering made of transparent glass or plastic | - |
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| (noun) an impracticable and illusory idea | - |
| (noun) a speculative scheme that depends on unstable factors that the planner cannot control | Synonyms: house of cards |
| (noun) a hollow globule of gas (e.g., air or carbon dioxide) | - |
| buckle | (noun) fastener that fastens together two ends of a belt or strap; often has loose prong | - |
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| (noun) a shape distorted by twisting or folding | Synonyms: warp |
| bugle | (noun) a brass instrument without valves; used for military calls and fanfares | - |
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| (noun) a tubular glass or plastic bead sewn onto clothing for decoration | - |
| (noun) any of various low-growing annual or perennial evergreen herbs native to Eurasia; used for ground cover | Synonyms: bugleweed |
| bundle | (noun) a package of several things tied together for carrying or storing | Synonyms: sheaf |
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| (noun) a collection of things wrapped or boxed together | Synonyms: package, packet, parcel |
| (noun) a large sum of money (especially as pay or profit) | Synonyms: big bucks, big money, megabucks, pile |
| bunghole | (noun) a hole in a barrel or cask; used to fill or empty it | - |
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| (noun) vulgar slang for anus | Synonyms: arse, arsehole, asshole |
| bungle | (noun) an embarrassing mistake | Synonyms: bloomer, blooper, blunder, boner, boo-boo, botch, flub, foul-up, fuckup, pratfall |
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| businesspeople | (noun) people who transact business (especially business executives) | Synonyms: business people |
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| bustle | (noun) a rapid active commotion | Synonyms: ado, flurry, fuss, hustle, stir |
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| (noun) a framework worn at the back below the waist for giving fullness to a woman's skirt | - |
| buttonhole | (noun) a hole through which buttons are pushed | Synonyms: button hole |
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| cable | (noun) a very strong thick rope made of twisted hemp or steel wire | - |
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| (noun) a television system that transmits over cables | Synonyms: cable system, cable television, cable television service |
| (noun) a conductor for transmitting electrical or optical signals or electric power | Synonyms: line, transmission line |
| (noun) a telegram sent abroad | Synonyms: cablegram, overseas telegram |
| (noun) television that is transmitted over cable directly to the receiver | Synonyms: cable television |
| (noun) a nautical unit of depth | Synonyms: cable's length, cable length |
| caboodle | (noun) any collection in its entirety | Synonyms: bunch, lot |
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| cackle | (noun) a loud laugh suggestive of a hen's cackle | - |
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| (noun) noisy talk | Synonyms: chatter, yack, yak, yakety-yak |
| (noun) the sound made by a hen after laying an egg | - |
| cacomistle | (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, cacomixle, civet cat, coon cat, miner's cat, raccoon fox, ring-tailed cat, ringtail |
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| cacomixle | (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, civet cat, coon cat, miner's cat, raccoon fox, ring-tailed cat, ringtail |
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