| bellow | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl |
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| bellower | (noun) someone who communicates vocally in a very loud voice | Synonyms: bawler, roarer, screamer, screecher, shouter, yeller |
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| bellowing | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, holla, holler, hollering, hollo, holloa, roar, roaring, yowl |
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| bellows | (noun) (used in the plural) a mechanical device that blows a strong current of air; used to make a fire burn more fiercely or to sound a musical instrument | - |
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| bellwether | (noun) sheep that leads the herd often wearing a bell | - |
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| (noun) someone who assumes leadership of a movement or activity | - |
| bellwort | (noun) any of various plants of the genus Uvularia having yellowish drooping bell-shaped flowers | Synonyms: merry bells, wild oats |
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| beltway | (noun) a highway that encircles an urban area so that traffic does not have to pass through the center | Synonyms: bypass, ring road, ringway |
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| bentwood | (noun) wood that is steamed until it becomes pliable and then is shaped for use in making furniture | - |
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| benweed | (noun) widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity | Synonyms: ragweed, ragwort, Senecio jacobaea, tansy ragwort |
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| bestowal | (noun) the act of conferring an honor or presenting a gift | Synonyms: bestowment, conferment, conferral |
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| (noun) a gift that is bestowed or conferred | Synonyms: bestowment |
| bestower | (noun) person who makes a gift of property | Synonyms: conferrer, donor, giver, presenter |
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| bestowment | (noun) the act of conferring an honor or presenting a gift | Synonyms: bestowal, conferment, conferral |
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| (noun) a gift that is bestowed or conferred | Synonyms: bestowal |
| betweenbrain | (noun) the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon | Synonyms: diencephalon, interbrain, thalmencephalon |
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| bewilderment | (noun) confusion resulting from failure to understand | Synonyms: bafflement, befuddlement, bemusement, mystification, obfuscation, puzzlement |
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| bewitchery | (noun) magnetic personal charm | Synonyms: animal magnetism, beguilement |
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| bewitchment | (noun) a magical spell | Synonyms: enchantment |
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| bigwig | (noun) the most important person in a group or undertaking | Synonyms: kingpin, top banana |
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| bilgewater | (noun) pretentious or silly talk or writing | Synonyms: baloney, boloney, bosh, drool, humbug, taradiddle, tarradiddle, tommyrot, tosh, twaddle |
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| billow | (noun) a large sea wave | Synonyms: surge |
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| bindweed | (noun) any of several vines of the genera Convolvulus and Calystegia having a twining habit | - |
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| bioweapon | (noun) any weapon usable in biological warfare | Synonyms: bioarm, biological weapon |
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| birthwort | (noun) creeping plant having curving flowers thought to resemble fetuses; native to Europe; naturalized Great Britain and eastern North America | Synonyms: Aristolochia clematitis |
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| bitewing | (noun) a dental X-ray film that can be held in place by the teeth during radiography | - |
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| bittersweet | (noun) twining shrub of North America having yellow capsules enclosing scarlet seeds | Synonyms: American bittersweet, Celastrus scandens, climbing bittersweet, false bittersweet, shrubby bittersweet, staff vine, waxwork |
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| (noun) poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America | Synonyms: bittersweet nightshade, climbing nightshade, deadly nightshade, poisonous nightshade, Solanum dulcamara, woody nightshade |
| bitterweed | (noun) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | Synonyms: ambrosia, ragweed |
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| (noun) widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States | Synonyms: bristly oxtongue, bugloss, oxtongue, Picris echioides |
| bitterwood | (noun) handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark | Synonyms: quassia, Quassia amara |
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| (noun) West Indian tree yielding the drug Jamaica quassia | Synonyms: Jamaica quassia, Picrasma excelsa, Picrasma excelsum |
| (noun) medium to large tree of tropical North and South America having odd-pinnate leaves and long panicles of small pale yellow flowers followed by scarlet fruits | Synonyms: paradise tree, Simarouba glauca |
| biweekly | (noun) a periodical that is published twice a week or every two weeks (either 104 or 26 issues per year) | - |
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| blackwash | (noun) a wash that colors a surface black | - |
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| (noun) a mixture of calomel and limewater that is used on syphilitic sores | Synonyms: black lotion |
| (noun) an attack intended to ruin someone's reputation | Synonyms: assassination, character assassination |
| blackwater | (noun) any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells | - |
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| blackwood | (noun) any of several hardwood trees yielding very dark-colored wood | Synonyms: blackwood tree |
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| (noun) very dark wood of any of several blackwood trees | - |
| bladderwort | (noun) any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals | - |
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| bladderwrack | (noun) a common rockweed used in preparing kelp and as manure | Synonyms: black rockweed, bladder fucus, Fucus vesiculosus, tang |
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| (noun) similar to and found with black rockweed | Synonyms: Ascophyllum nodosum |
| blameworthiness | (noun) a state of guilt | Synonyms: culpability, culpableness |
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| blewits | (noun) edible agaric that is pale lilac when young; has a smooth moist cap | Synonyms: Clitocybe nuda |
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| blindworm | (noun) small burrowing legless European lizard with tiny eyes; popularly believed to be blind | Synonyms: Anguis fragilis, slowworm |
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| (noun) any of the small slender limbless burrowing wormlike amphibians of the order Gymnophiona; inhabit moist soil in tropical regions | Synonyms: caecilian |
| bloodworm | (noun) a segmented marine worm with bright red body; often used for bait | - |
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| bloodwort | (noun) any of various plants of the family Haemodoraceae; roots contain a deep red coloring matter | - |
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| blow | (noun) a powerful stroke with the fist or a weapon | - |
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| (noun) forceful exhalation through the nose or mouth | Synonyms: puff |
| (noun) street names for cocaine | Synonyms: C, coke, nose candy, snow |
| (noun) an impact (as from a collision) | Synonyms: bump |
| (noun) an unpleasant or disappointing surprise | Synonyms: shock |
| (noun) an unfortunate happening that hinders or impedes; something that is thwarting or frustrating | Synonyms: black eye, reversal, reverse, setback |
| (noun) a strong current of air | Synonyms: blast, gust |
| blowback | (noun) Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gases created by the ignition of the propellant charge. | - |
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| (noun) misinformation resulting from the recirculation into the source country of disinformation previously planted abroad by that country's intelligence service | - |
| (noun) the backward escape of gases and unburned gunpowder after a gun is fired | Synonyms: backfire |
| blowball | (noun) any of several herbs of the genus Taraxacum having long tap roots and deeply notched leaves and bright yellow flowers followed by fluffy seed balls | Synonyms: dandelion |
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| blowbang | (noun) A sexual activity where fellatio is performed on multiple men | - |
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| blower | (noun) large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals | Synonyms: cetacean, cetacean mammal |
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| (noun) a device that produces a current of air | - |
| (noun) a fan run by an electric motor | Synonyms: electric fan |
| blowfish | (noun) any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers | Synonyms: globefish, puffer, pufferfish |
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| (noun) delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver | Synonyms: puffer, pufferfish, sea squab |
| blowfly | (noun) large usually hairy metallic blue or green fly; lays eggs in carrion or dung or wounds | Synonyms: blow fly |
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| blowgun | (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowpipe, blowtube |
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| blowhard | (noun) a very boastful and talkative person | Synonyms: boaster, braggart, bragger, line-shooter, vaunter |
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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 | - |
| blowing | (noun) processing that involves blowing a gas | - |
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| blowjob | (noun) slang for fellatio | Synonyms: cock sucking |
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| blowlamp | (noun) a burner that mixes air and gas to produce a very hot flame | Synonyms: blowtorch, torch |
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| blowout | (noun) a gay festivity | Synonyms: gala, gala affair, jamboree |
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| (noun) a sudden malfunction of a part or apparatus | - |
| (noun) an easy victory | Synonyms: laugher, romp, runaway, shoo-in, walkaway |
| blowpipe | (noun) a tube that directs air or gas into a flame to concentrate heat | Synonyms: blow tube, blowtube |
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| (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowgun, blowtube |
| blowtorch | (noun) a burner that mixes air and gas to produce a very hot flame | Synonyms: blowlamp, torch |
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| blowtube | (noun) a tube that directs air or gas into a flame to concentrate heat | Synonyms: blow tube, blowpipe |
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| (noun) a tube through which darts can be shot by blowing | Synonyms: blow tube, blowgun, blowpipe |
| blowup | (noun) a photographic print that has been enlarged | Synonyms: enlargement, magnification |
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| (noun) an unrestrained expression of emotion | Synonyms: ebullition, effusion, gush, outburst |
| (noun) a violent release of energy caused by a chemical or nuclear reaction | Synonyms: detonation, explosion |
| blueweed | (noun) a coarse prickly European weed with spikes of blue flowers; naturalized in United States | Synonyms: blue devil, blue thistle, Echium vulgare, viper's bugloss |
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| bluewing | (noun) American teal | Synonyms: Anas discors, blue-winged teal |
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| boardwalk | (noun) a walkway made of wooden boards; usually at seaside | - |
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| boatswain | (noun) a petty officer on a merchant ship who controls the work of other seamen | Synonyms: bo's'n, bo'sun, bos'n, bosun |
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| bobwhite | (noun) a popular North American game bird; named for its call | Synonyms: bobwhite quail, partridge |
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| bodywork | (noun) the work of making or repairing vehicle bodies | - |
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| (noun) the exterior body of a motor vehicle | - |
| bollworm | (noun) any of various moth caterpillars that destroy cotton bolls | - |
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| bondswoman | (noun) a female slave | Synonyms: bondmaid, bondwoman |
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| (noun) a female bound to serve without wages | Synonyms: bondmaid, bondwoman |
| (noun) a female who signs a bond as surety for someone else | - |
| bondwoman | (noun) a female slave | Synonyms: bondmaid, bondswoman |
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| (noun) a female bound to serve without wages | Synonyms: bondmaid, bondswoman |
| bookworm | (noun) someone who spends a great deal of time reading | - |
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| (noun) a person who pays more attention to formal rules and book learning than they merit | Synonyms: pedant, scholastic |
| borrower | (noun) someone who receives something on the promise to return it or its equivalent | - |
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| borrowing | (noun) obtaining funds from a lender | - |
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| (noun) the appropriation (of ideas or words etc) from another source | Synonyms: adoption |
| bow | (noun) a stroke with a curved piece of wood with taut horsehair strands that is used in playing stringed instruments | - |
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| (noun) a slightly curved piece of resilient wood with taut horsehair strands; used in playing certain stringed instruments | - |
| (noun) a weapon for shooting arrows, composed of a curved piece of resilient wood with a taut cord to propel the arrow | - |
| (noun) a knot with two loops and loose ends; used to tie shoelaces | Synonyms: bowknot |
| (noun) a decorative interlacing of ribbons | - |
| (noun) something curved in shape | Synonyms: arc |
| (noun) front part of a vessel or aircraft | Synonyms: fore, prow, stem |
| (noun) an appearance by actors or performers at the end of the concert or play in order to acknowledge the applause of the audience | Synonyms: curtain call |
| (noun) bending the head or body or knee as a sign of reverence or submission or shame or greeting | Synonyms: bowing, obeisance |
| bowdlerisation | (noun) the act of deleting or modifying all passages considered to be indecent | Synonyms: bowdlerization |
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| (noun) written material that has been bowdlerized | Synonyms: bowdlerization |
| bowdleriser | (noun) a person who edits a text by removing obscene or offensive words or passages | Synonyms: bowdlerizer, expurgator |
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| bowdlerization | (noun) the act of deleting or modifying all passages considered to be indecent | Synonyms: bowdlerisation |
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| (noun) written material that has been bowdlerized | Synonyms: bowdlerisation |
| bowdlerizer | (noun) a person who edits a text by removing obscene or offensive words or passages | Synonyms: bowdleriser, expurgator |
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| bowel | (noun) the part of the alimentary canal between the stomach and the anus | Synonyms: gut, intestine |
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| bowels | (noun) the center of the Earth | - |
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| bower | (noun) a framework that supports climbing plants | Synonyms: arbor, arbour, pergola |
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| bowerbird | (noun) any of various birds of the Australian region whose males build ornamented structures resembling bowers in order to attract females | Synonyms: catbird |
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| bowfin | (noun) primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America | Synonyms: Amia calva, dogfish, grindle |
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| bowhead | (noun) large-mouthed Arctic whale | Synonyms: Balaena mysticetus, bowhead whale, Greenland whale |
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| bowing | (noun) managing the bow in playing a stringed instrument | - |
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| (noun) bending the head or body or knee as a sign of reverence or submission or shame or greeting | Synonyms: bow, obeisance |
| bowknot | (noun) a knot with two loops and loose ends; used to tie shoelaces | Synonyms: bow |
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| bowl | (noun) the act of rolling something (as the ball in bowling) | Synonyms: roll |
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| (noun) a dish that is round and open at the top for serving foods | - |
| (noun) a round vessel that is open at the top; used chiefly for holding grains or liquids | - |
| (noun) a small round container that is open at the top for holding tobacco | Synonyms: pipe bowl |
| (noun) a large structure for open-air sports or entertainments | Synonyms: arena, sports stadium, stadium |
| (noun) a wooden ball (with flattened sides so that it rolls on a curved course) used in the game of lawn bowling | - |
| (noun) a large ball with finger holes used in the sport of bowling | Synonyms: bowling ball |
| (noun) the quantity contained in a bowl | Synonyms: bowlful |
| (noun) a concave shape with an open top | Synonyms: trough |
| bowlder | (noun) a large smooth mass of rock detached from its place of origin | Synonyms: boulder |
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| bowleg | (noun) a leg bowed outward at the knee (or below the knee) | Synonyms: bandy leg, bandyleg, bow leg, genu varum, tibia vara |
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| bowler | (noun) a felt hat that is round and hard with a narrow brim | Synonyms: bowler hat, derby, derby hat, plug hat |
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| (noun) a player who rolls balls down an alley at pins | - |
| (noun) a cricketer who delivers the ball to the batsman in cricket | - |
| bowlful | (noun) the quantity contained in a bowl | Synonyms: bowl |
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| bowline | (noun) a loop knot that neither slips nor jams | Synonyms: bowline knot |
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| bowling | (noun) a game in which balls are rolled at an object or group of objects with the aim of knocking them over or moving them | - |
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| (noun) the playing of a game of tenpins or duckpins etc | - |
| (noun) (cricket) the act of delivering a cricket ball to the batsman | - |
| bowls | (noun) a bowling game played on a level lawn with biased wooden balls that are rolled at a jack | Synonyms: lawn bowling |
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| bowman | (noun) a person who is expert in the use of a bow and arrow | Synonyms: archer |
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| bowsprit | (noun) a spar projecting from the bow of a vessel | - |
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| bowstring | (noun) the string of an archer's bow | - |
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| bowtie | (noun) a man's tie that ties in a bow | Synonyms: bow-tie, bow tie |
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| boxwood | (noun) evergreen shrubs or small trees | Synonyms: box |
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| (noun) very hard tough close-grained light yellow wood of the box (particularly the common box); used in delicate woodwork: musical instruments and inlays and engraving blocks | Synonyms: Turkish boxwood |
| bradawl | (noun) an awl for making small holes for brads or small screws | Synonyms: pricker |
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| brainpower | (noun) mental ability | Synonyms: brain, learning ability, mental capacity, mentality, wit |
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| brainwashing | (noun) forcible indoctrination into a new set of attitudes and beliefs | - |
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| brainwave | (noun) the clear (and often sudden) understanding of a complex situation | Synonyms: brainstorm, insight |
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| (noun) (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph | Synonyms: brain wave, cortical potential |
| brainworker | (noun) someone whose profession involves using his head to solve problems | Synonyms: brain-worker |
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| bratwurst | (noun) a small pork sausage | Synonyms: brat |
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| brawl | (noun) a noisy fight in a crowd | Synonyms: free-for-all |
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| (noun) an uproarious party | Synonyms: bash, do |