| backhoe | (noun) an excavator whose shovel bucket is attached to a hinged boom and is drawn backward to move earth | - |
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| bakehouse | (noun) a workplace where baked goods (breads and cakes and pastries) are produced or sold | Synonyms: bakery, bakeshop |
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| bakeshop | (noun) a workplace where baked goods (breads and cakes and pastries) are produced or sold | Synonyms: bakehouse, bakery |
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| ballyhoo | (noun) blatant or sensational promotion | Synonyms: hoopla, hype, plug |
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| barbershop | (noun) a shop where men can get their hair cut | - |
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| barrelhouse | (noun) a cheap drinking and dancing establishment | Synonyms: honky-tonk |
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| bathhouse | (noun) a building containing public baths | Synonyms: bagnio |
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| (noun) a building containing dressing rooms for bathers | Synonyms: bathing machine |
| batholite | (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth | Synonyms: batholith, pluton, plutonic rock |
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| batholith | (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth | Synonyms: batholite, pluton, plutonic rock |
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| bathometer | (noun) an instrument that measures the depth of water | Synonyms: bathymeter |
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| bathos | (noun) triteness or triviality of style | - |
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| (noun) a change from a serious subject to a disappointing one | Synonyms: anticlimax |
| (noun) insincere pathos | Synonyms: mawkishness |
| batrachomyomachia | (noun) a silly altercation | - |
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| bawdyhouse | (noun) a building where prostitutes are available | Synonyms: bagnio, bordello, brothel, cathouse, house of ill repute, house of prostitution, sporting house, whorehouse |
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| beholder | (noun) a person who becomes aware (of things or events) through the senses | Synonyms: observer, perceiver, percipient |
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| beholding | (noun) perception by means of the eyes | Synonyms: seeing, visual perception |
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| bellhop | (noun) someone employed as an errand boy and luggage carrier around hotels | Synonyms: bellboy, bellman |
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| benthos | (noun) organisms (plants and animals) that live at or near the bottom of a sea, lake, river or stream | - |
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| (noun) a region including the bottom of the sea and the littoral zones | Synonyms: benthic division, benthonic zone |
| bighorn | (noun) wild sheep of mountainous regions of western North America having massive curled horns | Synonyms: bighorn sheep, cimarron, Ovis canadensis, Rocky Mountain bighorn, Rocky Mountain sheep |
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| billhook | (noun) a cutting tool with a sharp edge | Synonyms: bill |
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| birdhouse | (noun) a shelter for birds | - |
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| bishop | (noun) (chess) a piece that can be moved diagonally over unoccupied squares of the same color | - |
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| (noun) port wine mulled with oranges and cloves | - |
| (noun) a senior member of the Christian clergy having spiritual and administrative authority; appointed in Christian churches to oversee priests or ministers; considered in some churches to be successors of the twelve Apostles of Christ | - |
| bishopric | (noun) the territorial jurisdiction of a bishop | Synonyms: diocese, episcopate |
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| bishopry | (noun) the office and dignity of a bishop | Synonyms: episcopate |
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| blackthorn | (noun) erect and almost thornless American hawthorn with somewhat pear-shaped berries | Synonyms: Crataegus calpodendron, Crataegus tomentosa, pear haw, pear hawthorn |
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| (noun) a thorny Eurasian bush with plumlike fruits | Synonyms: Prunus spinosa, sloe |
| blockhouse | (noun) a stronghold that is reinforced for protection from enemy fire; with apertures for defensive fire | - |
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| bloodhound | (noun) a breed of large powerful hound of European origin having very acute smell and used in tracking | Synonyms: sleuthhound |
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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 | - |
| boardinghouse | (noun) a private house that provides accommodations and meals for paying guests | Synonyms: boarding house |
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| boarhound | (noun) large hound used in hunting wild boars | - |
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| boathouse | (noun) a shed at the edge of a river or lake; used to store boats | - |
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| bondholder | (noun) a holder of bonds issued by a government or corporation | - |
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| bonhomie | (noun) a disposition to be friendly and approachable (easy to talk to) | Synonyms: affability, affableness, amiability, amiableness, geniality |
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| bookshop | (noun) a shop where books are sold | Synonyms: bookstall, bookstore |
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| boothose | (noun) protective stockings worn with or in place of boots | - |
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| boxershorts | (noun) underpants worn by men | Synonyms: boxers, drawers, shorts, underdrawers |
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| boxthorn | (noun) any of various shrubs or vines of the genus Lycium with showy flowers and bright berries | Synonyms: matrimony vine |
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| boyhood | (noun) the childhood of a boy | - |
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| broncho | (noun) an unbroken or imperfectly broken mustang | Synonyms: bronc, bronco |
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| bronchodilator | (noun) a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs | - |
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| bronchopneumonia | (noun) pneumonia characterized by acute inflammation of the walls of the bronchioles | Synonyms: bronchial pneumonia |
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| bronchoscope | (noun) a slender tubular instrument used to examine the bronchial tubes | - |
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| bronchospasm | (noun) a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis | - |
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| brotherhood | (noun) the feeling that men should treat one another like brothers | - |
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| (noun) people engaged in a particular occupation | Synonyms: fraternity, sodality |
| (noun) an organization of employees formed to bargain with the employer | Synonyms: labor union, trade union, trades union, union |
| (noun) the kinship relation between a male offspring and the siblings | - |
| buckshot | (noun) small lead shot for shotgun shells | Synonyms: bird shot, duck shot |
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| buckthorn | (noun) any shrub or small tree of the genus Bumelia | - |
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| (noun) a shrub or shrubby tree of the genus Rhamnus; fruits are source of yellow dyes or pigments | - |
| (noun) an Old World plantain with long narrow ribbed leaves widely established in temperate regions | Synonyms: English plantain, narrow-leaved plantain, Plantago lanceolata, ribgrass, ribwort, ripple-grass |
| bullhorn | (noun) a portable loudspeaker with built-in microphone and amplifier | Synonyms: loud-hailer, loud hailer |
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| bullshot | (noun) a cocktail made with vodka and beef bouillon or consomme | - |
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| 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 |
| buttonhole | (noun) a hole through which buttons are pushed | Synonyms: button hole |
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| buttonhook | (noun) a hook for pulling a button through a buttonhole | - |
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| cabochon | (noun) a highly polished gem that is cut convexly but without facets | - |
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| cachou | (noun) a scented lozenge used to sweeten the breath (e.g. to conceal the odor of tobacco) | - |
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| cacophony | (noun) loud confusing disagreeable sounds | - |
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| (noun) a loud harsh or strident noise | Synonyms: blare, blaring, clamor, din |
| cahoot | (noun) collusion | - |
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| cakehole | (noun) informal terms for the mouth | Synonyms: gob, hole, maw, trap, yap |
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| camphor | (noun) a resin obtained from the camphor tree; used in making celluloid and liniment | - |
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| camphorweed | (noun) aromatic plant of western United States | Synonyms: Trichostema lanceolatum, turpentine camphor weed, vinegarweed |
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| caoutchouc | (noun) an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products | Synonyms: gum elastic, India rubber, natural rubber, rubber |
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| cardholder | (noun) a player who holds a card or cards in a card game | - |
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| (noun) a person who holds a credit card or debit card | - |
| cardhouse | (noun) an unstable construction with playing cards | Synonyms: card-house, cardcastle, house of cards |
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| carhop | (noun) a waiter at a drive-in restaurant | - |
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| carpophore | (noun) a slender stalk that furnishes an axis for a carpel | - |
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| carthorse | (noun) draft horse kept for pulling carts | Synonyms: cart horse, drayhorse |
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| cataphoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: dielectrolysis, electrophoresis, ionophoresis |
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| catecholamine | (noun) any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland | - |
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| cathode | (noun) a negatively charged electrode that is the source of electrons entering an electrical device | - |
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| (noun) the positively charged terminal of a voltaic cell or storage battery that supplies current | - |
| catholicity | (noun) the quality of being universal; existing everywhere | Synonyms: universality |
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| catholicon | (noun) hypothetical remedy for all ills or diseases; once sought by the alchemists | Synonyms: cure-all, nostrum, panacea |
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| cathouse | (noun) a building where prostitutes are available | Synonyms: bagnio, bawdyhouse, bordello, brothel, house of ill repute, house of prostitution, sporting house, whorehouse |
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| cellphone | (noun) a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver | Synonyms: cell, cellular phone, cellular telephone, mobile phone |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| chapterhouse | (noun) a house used as a residence by a chapter of a fraternity | Synonyms: frat house, fraternity house |
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| (noun) a building attached to a monastery or cathedral; used as a meeting place for the chapter | - |
| charterhouse | (noun) a Carthusian monastery | - |
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| childhood | (noun) the state of a child between infancy and adolescence | Synonyms: puerility |
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| (noun) the time of person's life when they are a child | - |
| chinchona | (noun) any of several trees of the genus Cinchona | Synonyms: cinchona |
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| chlamyphore | (noun) very small Argentine armadillo with pale silky hair and pink plates on head and neck | Synonyms: Chlamyphorus truncatus, fairy armadillo, pichiciago, pichiciego |
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| choana | (noun) either one of the two posterior openings at the back of the nasal cavity leading to the nasopharynx | Synonyms: internal nostril, posterior nasal aperture |
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| choanocyte | (noun) any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body | Synonyms: collar cell |
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| choc | (noun) colloquial British abbreviation | - |
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| chock | (noun) a block of wood used to prevent the sliding or rolling of a heavy object | Synonyms: wedge |
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| chocolate | (noun) a medium brown to dark-brown color | Synonyms: burnt umber, coffee, deep brown, umber |
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| (noun) a food made from roasted ground cacao beans | - |
| (noun) a beverage made from cocoa powder and milk and sugar; usually drunk hot | Synonyms: cocoa, drinking chocolate, hot chocolate |
| choice | (noun) the act of choosing or selecting | Synonyms: option, pick, selection |
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| (noun) the person or thing chosen or selected | Synonyms: pick, selection |
| (noun) one of a number of things from which only one can be chosen | Synonyms: alternative, option |
| choiceness | (noun) the quality of being very good indeed | Synonyms: fineness |
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| choir | (noun) the area occupied by singers; the part of the chancel between sanctuary and nave | - |
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| (noun) a chorus that sings as part of a religious ceremony | - |
| (noun) a family of similar musical instrument playing together | Synonyms: consort |
| choirboy | (noun) a boy who sings in a choir | - |
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| choirmaster | (noun) the musical director of a choir | Synonyms: cantor, precentor |
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| choke | (noun) a valve that controls the flow of air into the carburetor of a gasoline engine | - |
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| (noun) a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current | Synonyms: choke coil, choking coil |
| chokecherry | (noun) a common wild cherry of eastern North America having small bitter black berries favored by birds | Synonyms: chokecherry tree, Prunus virginiana |
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| (noun) the fruit of the chokecherry tree | - |
| chokedamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: blackdamp |
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| chokehold | (noun) a restraining hold; someone loops the arm around the neck of another person in a tight grip, usually from behind | Synonyms: choke hold |
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| (noun) complete power over a person or situation | Synonyms: stranglehold, throttlehold |
| chokepoint | (noun) a point of congestion or blockage | - |
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| (noun) a narrowing that reduces the flow through a channel | Synonyms: bottleneck, constriction |
| choker | (noun) a high tight collar | Synonyms: neck ruff, ruff, ruffle |
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| (noun) necklace that fits tightly around a woman's neck | Synonyms: collar, dog collar, neckband |
| (noun) someone who kills by strangling | Synonyms: garroter, garrotter, strangler, throttler |
| (noun) an unfortunate person who is unable to perform effectively because of nervous tension or agitation | - |
| chokey | (noun) British slang (dated) for a prison | Synonyms: choky |
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| choking | (noun) the act of suffocating (someone) by constricting the windpipe | Synonyms: strangling, strangulation, throttling |
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| (noun) a condition caused by blocking the airways to the lungs (as with food or swelling of the larynx) | - |
| choky | (noun) British slang (dated) for a prison | Synonyms: chokey |
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| cholangiography | (noun) roentgenographic examination of the bile ducts after a contrast medium has been injected | - |
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| cholangitis | (noun) inflammation of the bile ducts | - |
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| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| cholecystectomy | (noun) surgical removal of the gall bladder (usually for relief of gallstone pain) | - |
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| cholecystitis | (noun) inflammation of the gall bladder | - |
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