| blackboard | (noun) sheet of slate; for writing with chalk | Synonyms: chalkboard |
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| blackguard | (noun) someone who is morally reprehensible | Synonyms: bounder, cad, dog, heel, hound |
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| blackheart | (noun) heart cherry with dark flesh and skin | Synonyms: blackheart cherry |
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| (noun) any of various diseases in which the central tissues blacken | - |
| blare | (noun) a loud harsh or strident noise | Synonyms: blaring, cacophony, clamor, din |
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| blaring | (noun) a loud harsh or strident noise | Synonyms: blare, cacophony, clamor, din |
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| blarney | (noun) flattery designed to gain favor | Synonyms: coaxing, soft soap, sweet talk |
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| blepharism | (noun) condition in which a person blinks continuously | - |
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| blepharitis | (noun) inflammation of the eyelids characterized by redness and swelling and dried crusts | - |
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| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
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| blizzard | (noun) a series of unexpected and unpleasant occurrences | Synonyms: rash |
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| (noun) a storm with widespread snowfall accompanied by strong winds | Synonyms: snowstorm |
| blowhard | (noun) a very boastful and talkative person | Synonyms: boaster, braggart, bragger, line-shooter, vaunter |
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| boar | (noun) an uncastrated male hog | - |
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| (noun) Old World wild swine having a narrow body and prominent tusks from which most domestic swine come; introduced in United States | Synonyms: Sus scrofa, wild boar |
| board | (noun) a flat piece of material designed for a special purpose | - |
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| (noun) a table at which meals are served | Synonyms: dining table |
| (noun) electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices | Synonyms: control board, control panel, instrument panel, panel |
| (noun) a vertical surface on which information can be displayed to public view | Synonyms: display board, display panel |
| (noun) a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities | Synonyms: add-in, card, circuit board, circuit card, plug-in |
| (noun) a flat portable surface (usually rectangular) designed for board games | Synonyms: gameboard |
| (noun) food or meals in general | Synonyms: table |
| (noun) a committee having supervisory powers | - |
| (noun) a stout length of sawn timber; made in a wide variety of sizes and used for many purposes | Synonyms: plank |
| boarder | (noun) a tenant in someone's house | Synonyms: lodger, roomer |
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| (noun) a pupil who lives at school during term time | - |
| (noun) someone who forces their way aboard ship | - |
| boarding | (noun) the act of passengers and crew getting aboard a ship or aircraft | Synonyms: embarkation, embarkment |
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| (noun) a structure of boards | - |
| boardinghouse | (noun) a private house that provides accommodations and meals for paying guests | Synonyms: boarding house |
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| boardroom | (noun) a room where a committee meets (such as the board of directors of a company) | Synonyms: council chamber |
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| boards | (noun) (used in the plural) the boarding that surrounds an ice hockey rink | - |
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| (noun) (used in the plural) the stage of a theater | - |
| boardwalk | (noun) a walkway made of wooden boards; usually at seaside | - |
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| boarfish | (noun) fish with a projecting snout | Synonyms: Capros aper |
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| (noun) fish with large eyes and long snouts | - |
| boarhound | (noun) large hound used in hunting wild boars | - |
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| boatyard | (noun) a place where boats are built or maintained or stored | - |
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| bodyguard | (noun) a group of men who escort and protect some important person | - |
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| (noun) someone who escorts and protects a prominent person | Synonyms: escort |
| bolivar | (noun) the basic unit of money in Venezuela; equal to 100 centimos | - |
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| bollard | (noun) a strong post (as on a wharf or quay or ship for attaching mooring lines) | Synonyms: bitt |
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| bombard | (noun) a large shawm; the bass member of the shawm family | Synonyms: bombardon |
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| bombardier | (noun) the member of a bomber crew responsible for using the bombsight and releasing the bombs on the target | - |
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| (noun) a noncommissioned officer in the British artillery | - |
| bombardment | (noun) the heavy fire of artillery to saturate an area rather than hit a specific target | Synonyms: barrage, barrage fire, battery, shelling |
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| (noun) an attack by dropping bombs | Synonyms: bombing |
| (noun) the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays) | - |
| (noun) the rapid and continuous delivery of linguistic communication (spoken or written) | Synonyms: barrage, onslaught, outpouring |
| bombardon | (noun) a large shawm; the bass member of the shawm family | Synonyms: bombard |
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| (noun) a tuba that coils over the shoulder of the musician | Synonyms: helicon |
| bookmark | (noun) a marker (a piece of paper or ribbon) placed between the pages of a book to mark the reader's place | Synonyms: bookmarker |
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| bookmarker | (noun) a marker (a piece of paper or ribbon) placed between the pages of a book to mark the reader's place | Synonyms: bookmark |
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| boulevard | (noun) a wide street or thoroughfare | Synonyms: avenue |
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| boulevardier | (noun) a visitor of a city boulevard (especially in Paris) | - |
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| boundary | (noun) the greatest possible degree of something | Synonyms: bound, limit |
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| (noun) the line or plane indicating the limit or extent of something | Synonyms: bound, bounds |
| (noun) a line determining the limits of an area | Synonyms: bound, edge |
| boxcar | (noun) a freight car with roof and sliding doors in the sides | - |
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| boxcars | (noun) (usually plural) an expression used when two dice are thrown and both come up showing six spots | - |
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| bradycardia | (noun) abnormally slow heartbeat | - |
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| braggart | (noun) a very boastful and talkative person | Synonyms: blowhard, boaster, bragger, line-shooter, vaunter |
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| brassard | (noun) armor plate that protects the arm | - |
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| breadboard | (noun) a wooden or plastic board on which dough is kneaded or bread is sliced | Synonyms: bread board |
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| breviary | (noun) (Roman Catholic Church) a book of prayers to be recited daily by certain priests and members of religious orders | - |
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| briar | (noun) a pipe made from the root (briarroot) of the tree heath | Synonyms: briar pipe |
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| (noun) evergreen treelike Mediterranean shrub having fragrant white flowers in large terminal panicles and hard woody roots used to make tobacco pipes | Synonyms: brier, Erica arborea, tree heath |
| (noun) a very prickly woody vine of the eastern United States growing in tangled masses having tough round stems with shiny leathery leaves and small greenish flowers followed by clusters of inedible shiny black berries | Synonyms: brier, bullbrier, catbrier, greenbrier, horse-brier, horse brier, Smilax rotundifolia |
| (noun) Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips | Synonyms: brier, eglantine, Rosa eglanteria, sweetbriar, sweetbrier |
| briard | (noun) old French breed of large strong usually black dogs having a long tail and long wavy and slightly stiff coat | - |
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| briarroot | (noun) hard woody root of the briar Erica arborea | - |
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| briarwood | (noun) wood from the hard woody root of the briar Erica arborea; used to make tobacco pipes | Synonyms: brier-wood, brierwood |
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| brickyard | (noun) a place where bricks are made and sold | Synonyms: brickfield |
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| brokenheartedness | (noun) intense sorrow caused by loss of a loved one (especially by death) | Synonyms: grief, heartache, heartbreak |
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| broodmare | (noun) a female horse used for breeding | Synonyms: stud mare |
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| buckaroo | (noun) local names for a cowboy (`vaquero' is used especially in southwestern and central Texas and `buckaroo' is used especially in California) | Synonyms: buckeroo, vaquero |
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| buckboard | (noun) an open horse-drawn carriage with four wheels; has a seat attached to a flexible board between the two axles | - |
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| budgerigar | (noun) small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors | Synonyms: budgereegah, budgerygah, budgie, grass parakeet, lovebird, Melopsittacus undulatus, shell parakeet |
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| bugbear | (noun) an object of dread or apprehension | Synonyms: hobgoblin |
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| (noun) an imaginary monster used to frighten children | Synonyms: bogeyman, booger, boogeyman, bugaboo |
| bulimarexia | (noun) a disorder of eating in which the person alternates between strong craving for food and aversion to food; characterized by excessive eating followed by periods of fasting or self-induced vomiting | Synonyms: binge-purge syndrome, binge-vomit syndrome, bulimia nervosa |
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| bulwark | (noun) a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away | Synonyms: breakwater, groin, groyne, jetty, mole, seawall |
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| (noun) an embankment built around a space for defensive purposes | Synonyms: rampart, wall |
| (noun) a fencelike structure around a deck | - |
| burglar | (noun) a thief who enters a building with intent to steal | - |
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| burglary | (noun) entering a building unlawfully with intent to commit a felony or to steal valuable property | - |
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| bursar | (noun) the treasurer at a college or university | - |
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| bursary | (noun) the treasury of a public institution or religious order | - |
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| busbar | (noun) an electrical conductor that makes a common connection between several circuits | Synonyms: bus |
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| bustard | (noun) large heavy-bodied chiefly terrestrial game bird capable of powerful swift flight; classified with wading birds but frequents grassy steppes | - |
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| buzzard | (noun) a New World vulture that is common in South America and Central America and the southern United States | Synonyms: Cathartes aura, turkey buzzard, turkey vulture |
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| (noun) the common European short-winged hawk | Synonyms: Buteo buteo |
| cabaret | (noun) a series of acts at a night club | Synonyms: floor show, floorshow |
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| (noun) a spot that is open late at night and that provides entertainment (as singers or dancers) as well as dancing and food and drink | Synonyms: club, night club, nightclub, nightspot |
| caesarean | (noun) the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way) | Synonyms: abdominal delivery, C-section, caesarean delivery, caesarean section, caesarian, caesarian delivery, caesarian section, cesarean, cesarean delivery, cesarean section, cesarian, cesarian section |
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| caesarian | (noun) the delivery of a fetus by surgical incision through the abdominal wall and uterus (from the belief that Julius Caesar was born that way) | Synonyms: abdominal delivery, C-section, caesarean, caesarean delivery, caesarean section, caesarian delivery, caesarian section, cesarean, cesarean delivery, cesarean section, cesarian, cesarian section |
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| calamari | (noun) (Italian cuisine) squid prepared as food | Synonyms: calamary, squid |
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| calamary | (noun) (Italian cuisine) squid prepared as food | Synonyms: calamari, squid |
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| calceolaria | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: slipperwort |
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| calendar | (noun) a list or register of events (appointments or social events or court cases etc) | - |
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| (noun) a tabular array of the days (usually for one year) | - |
| (noun) a system of timekeeping that defines the beginning and length and divisions of the year | - |
| calvaria | (noun) the dome of the skull | Synonyms: skullcap |
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| calvary | (noun) any experience that causes intense suffering | Synonyms: martyrdom |
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| camaraderie | (noun) the quality of affording easy familiarity and sociability | Synonyms: chumminess, comradeliness, comradery, comradeship |
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| camarilla | (noun) a clique (often secret) that seeks power usually through intrigue | Synonyms: cabal, faction, junto |
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| camelopard | (noun) tallest living quadruped; having a spotted coat and small horns and very long neck and legs; of savannahs of tropical Africa | Synonyms: Giraffa camelopardalis, giraffe |
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| canard | (noun) a deliberately misleading fabrication | - |
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| canary | (noun) any of several small Old World finches | Synonyms: canary bird |
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| (noun) a moderate yellow with a greenish tinge | Synonyms: canary yellow |
| (noun) a female singer | - |
| (noun) someone acting as an informer or decoy for the police | Synonyms: fink, sneak, sneaker, snitch, snitcher, stool pigeon, stoolie, stoolpigeon |
| caparison | (noun) stable gear consisting of a decorated covering for a horse, especially (formerly) for a warhorse | Synonyms: housing, trapping |
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| capibara | (noun) pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent | Synonyms: capybara, Hydrochoerus hydrochaeris |
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| capillarity | (noun) a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries | Synonyms: capillary action |
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| capillary | (noun) a tube of small internal diameter; holds liquid by capillary action | Synonyms: capillary tube, capillary tubing |
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| (noun) any of the minute blood vessels connecting arterioles with venules | Synonyms: capillary vessel |
| capybara | (noun) pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent | Synonyms: capibara, Hydrochoerus hydrochaeris |
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| car | (noun) a motor vehicle with four wheels; usually propelled by an internal combustion engine | Synonyms: auto, automobile, machine, motorcar |
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| (noun) a wheeled vehicle adapted to the rails of railroad | Synonyms: railcar, railroad car, railway car |
| (noun) where passengers ride up and down | Synonyms: elevator car |
| (noun) the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant | Synonyms: gondola |
| (noun) a conveyance for passengers or freight on a cable railway | Synonyms: cable car |
| carabao | (noun) water buffalo of the Philippines | - |
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| carabineer | (noun) a soldier (historically a mounted soldier) who is armed with a carbine | Synonyms: carabinier, carbineer |
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| carabiner | (noun) an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes | Synonyms: karabiner, snap ring |
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| carabinier | (noun) a soldier (historically a mounted soldier) who is armed with a carbine | Synonyms: carabineer, carbineer |
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| caracal | (noun) of deserts of northern Africa and southern Asia | Synonyms: desert lynx, Lynx caracal |
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| caracara | (noun) any of various long-legged carrion-eating hawks of South America and Central America | - |
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| carack | (noun) a large galleon sailed in the Mediterranean as a merchantman | Synonyms: carrack |
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| caracolito | (noun) large Costa Rican tree having light-colored wood suitable for cabinetry; similar to the African lepidobotrys in wood structure as well as in fruit and flowers and leaves and seeds; often classified in other families | Synonyms: Ruptiliocarpon caracolito |
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| caracul | (noun) hardy coarse-haired sheep of central Asia; lambs are valued for their soft curly black fur | Synonyms: broadtail, karakul |
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| carafe | (noun) a bottle with a stopper; for serving wine or water | Synonyms: decanter |
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| caragana | (noun) any plant of the genus Caragana having even-pinnate leaves and mostly yellow flowers followed by seeds in a linear pod | Synonyms: pea tree |
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| carageen | (noun) dark purple edible seaweed of the Atlantic coasts of Europe and North America | Synonyms: carrageen, carragheen, Chondrus crispus, Irish moss |
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| carambola | (noun) deeply ridged yellow-brown tropical fruit; used raw as a vegetable or in salad or when fully ripe as a dessert | Synonyms: star fruit |
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| (noun) East Indian tree bearing deeply ridged yellow-brown fruit | Synonyms: Averrhoa carambola, carambola tree |
| caramel | (noun) a medium to dark tan color | Synonyms: buff, caramel brown, raw sienna, yellowish brown |
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| (noun) firm chewy candy made from caramelized sugar and butter and milk | - |
| (noun) burnt sugar; used to color and flavor food | Synonyms: caramelized sugar |
| carancha | (noun) South American caracara | Synonyms: Polyborus plancus |
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| caranda | (noun) South American palm yielding a wax similar to carnauba wax | Synonyms: caranda palm, caranday, Copernicia alba, Copernicia australis, wax palm |
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| caranday | (noun) South American palm yielding a wax similar to carnauba wax | Synonyms: caranda, caranda palm, Copernicia alba, Copernicia australis, wax palm |
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| carangid | (noun) a percoid fish of the family Carangidae | Synonyms: carangid fish |
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| carapace | (noun) hard outer covering or case of certain organisms such as arthropods and turtles | Synonyms: cuticle, shell, shield |
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