| 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 |
| blue | (adjective) of the color intermediate between green and violet; having a color similar to that of a clear unclouded sky | Synonyms: blueish, bluish |
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| (adjective) filled with melancholy and despondency | Synonyms: depressed, dispirited, down, down in the mouth, downcast, downhearted, gloomy, grim, low-spirited, low |
| (adjective) causing dejection | Synonyms: dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, grim, sorry |
| (adjective) belonging to or characteristic of the nobility or aristocracy | Synonyms: aristocratic, aristocratical, blue-blooded, gentle, patrician |
| (adjective) morally rigorous and strict | Synonyms: puritanic, puritanical |
| (adjective) used to signify the Union forces in the American Civil War (who wore blue uniforms) | - |
| (adjective) suggestive of sexual impropriety | Synonyms: gamey, gamy, juicy, naughty, racy, risque, spicy |
| (adjective) characterized by profanity or cursing | Synonyms: blasphemous, profane |
| (noun) any of numerous small butterflies of the family Lycaenidae | - |
| (noun) the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic | Synonyms: amobarbital sodium, Amytal, blue angel, blue devil |
| (noun) blue clothing | - |
| (noun) blue color or pigment; resembling the color of the clear sky in the daytime | Synonyms: blueness |
| (noun) any organization or party whose uniforms or badges are blue | - |
| (noun) the sky as viewed during daylight | Synonyms: blue air, blue sky, wild blue yonder |
| (noun) used to whiten laundry or hair or give it a bluish tinge | Synonyms: blueing, bluing |
| (verb) turn blue | - |
| 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 |
| bluenose | (noun) a native or inhabitant of Nova Scotia | Synonyms: Nova Scotian |
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| bluestone | (noun) bluish-grey sandstone used for paving and building | - |
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| bluetongue | (noun) a viral disease of sheep and cattle that is transmitted by biting midges | - |
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| boardinghouse | (noun) a private house that provides accommodations and meals for paying guests | Synonyms: boarding house |
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| boathouse | (noun) a shed at the edge of a river or lake; used to store boats | - |
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| bobble | (noun) the momentary juggling of a batted or thrown baseball | - |
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| (verb) make a mess of, destroy or ruin | Synonyms: ball up, blow, bodge, bollix, bollix up, bollocks, bollocks up, botch, botch up, bumble, bungle, flub, fluff, foul up, fuck up, fumble, louse up, mess up, mishandle, muck up, muff, screw up, spoil |
| bobwhite | (noun) a popular North American game bird; named for its call | Synonyms: bobwhite quail, partridge |
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| bocce | (noun) Italian bowling played on a long narrow dirt court | Synonyms: bocci, boccie |
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| boccie | (noun) Italian bowling played on a long narrow dirt court | Synonyms: bocce, bocci |
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| bode | (verb) indicate, as with a sign or an omen | Synonyms: augur, auspicate, betoken, forecast, foreshadow, foretell, omen, portend, predict, prefigure, presage, prognosticate |
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| bodge | (verb) make a mess of, destroy or ruin | Synonyms: ball up, blow, bobble, bollix, bollix up, bollocks, bollocks up, botch, botch up, bumble, bungle, flub, fluff, foul up, fuck up, fumble, louse up, mess up, mishandle, muck up, muff, screw up, spoil |
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| bodice | (noun) part of a dress above the waist | - |
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| boggle | (verb) overcome with amazement | Synonyms: bowl over, flabbergast |
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| (verb) startle with amazement or fear | - |
| (verb) hesitate when confronted with a problem, or when in doubt or fear | - |
| bogie | (noun) an unidentified (and possibly enemy) aircraft | Synonyms: bogey, bogy |
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| (noun) a bogle or goblin; where used as a proper name, the Devil | Synonyms: bogey, bogy |
| boilerplate | (noun) thick plate iron used in the production of boilers | - |
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| (noun) standard formulations uniformly found in certain types of legal documents or news stories | - |
| boldface | (noun) a typeface with thick heavy lines | Synonyms: bold, bold face |
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| (verb) print in boldface | - |
| 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) | - |
| bolete | (noun) any fungus of the family Boletaceae | - |
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| bolide | (noun) an especially luminous meteor (sometimes exploding) | Synonyms: fireball |
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| bolshevise | (verb) make Communist or bring in accord with Communist principles | Synonyms: bolshevize, communise, communize |
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| bolshevize | (verb) make Communist or bring in accord with Communist principles | Synonyms: bolshevise, communise, communize |
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| bolshie | (noun) emotionally charged terms used to refer to extreme radicals or revolutionaries | Synonyms: Bolshevik, bolshy, Marxist, red |
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| bombazine | (noun) a twilled fabric used for dresses; the warp is silk and the weft is worsted | - |
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| bombie | (noun) an unexploded bomblet | - |
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| bombilate | (verb) make a buzzing sound | Synonyms: bombinate, buzz |
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| bombinate | (verb) make a buzzing sound | Synonyms: bombilate, buzz |
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| bonce | (noun) informal terms for a human head | Synonyms: attic, bean, dome, noggin, noodle |
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| bondable | (adjective) capable of holding together or cohering; as particles in a mass | - |
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| (adjective) capable of being fastened or secured with a rope or bond | Synonyms: bindable |
| bondage | (noun) sexual practice that involves physically restraining (by cords or handcuffs) one of the partners | - |
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| (noun) the state of being under the control of another person | Synonyms: slavery, thraldom, thrall, thralldom |
| (noun) the state of being under the control of a force or influence or abstract power | - |
| bonderise | (verb) coat with a substance that will prevent corrosion | Synonyms: bonderize |
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| bonderize | (verb) coat with a substance that will prevent corrosion | Synonyms: bonderise |
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| bone | (adjective) consisting of or made up of bone | - |
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| (noun) a shade of white the color of bleached bones | Synonyms: ivory, off-white, pearl |
| (noun) rigid connective tissue that makes up the skeleton of vertebrates | Synonyms: os |
| (noun) the porous calcified substance from which bones are made | Synonyms: osseous tissue |
| (verb) remove the bones from | Synonyms: debone |
| (verb) study intensively, as before an exam | Synonyms: bone up, cram, drum, get up, grind away, mug up, swot, swot up |
| bonelike | (adjective) resembling bone | - |
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| bonfire | (noun) a large outdoor fire that is lighted as a signal or in celebration | Synonyms: balefire |
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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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| boniface | (noun) the owner or manager of an inn | Synonyms: host, innkeeper |
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| bonnie | (adjective) very pleasing to the eye | Synonyms: bonny, comely, fair, sightly |
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| bonxie | (noun) gull-like jaeger of northern seas | Synonyms: skua |
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| booboisie | (noun) class consisting of all those who are considered boobs | - |
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| 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 |
| boogie | (noun) an instrumental version of the blues (especially for piano) | Synonyms: boogie-woogie |
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| (verb) dance to boogie music | - |
| bookable | (adjective) subject to being reserved or booked | - |
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| bookcase | (noun) a piece of furniture with shelves for storing books | - |
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| bookie | (noun) a gambler who accepts and pays off bets (especially on horse races) | Synonyms: bookmaker |
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| booklouse | (noun) minute wingless psocopterous insects injurious to books and papers | Synonyms: book louse, deathwatch, Liposcelis divinatorius |
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| bookmobile | (noun) a van with shelves of books; serves as a mobile library or bookstore | - |
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| bookplate | (noun) a label identifying the owner of a book in which it is pasted | Synonyms: ex libris |
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| bookstore | (noun) a shop where books are sold | Synonyms: bookshop, bookstall |
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| boondoggle | (noun) work of little or no value done merely to look busy | - |
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| (verb) do useless, wasteful, or trivial work | - |
| bootee | (noun) a slipper that is soft and wool (for babies) | Synonyms: bootie |
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| boothose | (noun) protective stockings worn with or in place of boots | - |
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| bootie | (noun) a slipper that is soft and wool (for babies) | Synonyms: bootee |
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| bootlace | (noun) a long lace for fastening boots | - |
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| booze | (noun) an alcoholic beverage that is distilled rather than fermented | Synonyms: hard drink, hard liquor, John Barleycorn, liquor, spirits, strong drink |
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| (verb) consume alcohol | Synonyms: drink, fuddle, hit the bottle |
| borage | (noun) an herb whose leaves are used to flavor sauces and punches; young leaves can be eaten in salads or cooked | - |
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| (noun) hairy blue-flowered European annual herb long used in herbal medicine and eaten raw as salad greens or cooked like spinach | Synonyms: Borago officinalis, tailwort |
| borate | (noun) a salt or ester of boric acid | - |
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| bordelaise | (noun) brown sauce with beef marrow and red wine | - |
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| borderline | (adjective) of questionable or minimal quality | Synonyms: marginal |
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| (noun) a line that indicates a boundary | Synonyms: border, boundary line, delimitation, mete |
| bore | (noun) a hole or passage made by a drill; usually made for exploratory purposes | Synonyms: bore-hole, drill hole |
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| (noun) diameter of a tube or gun barrel | Synonyms: caliber, calibre, gauge |
| (noun) a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary) | Synonyms: aegir, eager, eagre, tidal bore |
| (noun) a person who evokes boredom | Synonyms: dullard |
| (verb) make a hole, especially with a pointed power or hand tool | Synonyms: drill |
| (verb) cause to be bored | Synonyms: tire |
| 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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| bornite | (noun) a mineral consisting of sulfides of copper and iron that is found in copper deposits | Synonyms: peacock ore |
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| borosilicate | (noun) a salt of boric and silicic acids | - |
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| bosie | (noun) a cricket ball bowled as if to break one way that actually breaks in the opposite way | Synonyms: bosie ball, googly, wrong 'un |
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| botanise | (verb) collect and study plants | Synonyms: botanize |
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| botanize | (verb) collect and study plants | Synonyms: botanise |
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| bothersome | (adjective) causing irritation or annoyance | Synonyms: annoying, galling, irritating, nettlesome, pesky, pestering, pestiferous, plaguey, plaguy, teasing, vexatious, vexing |
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| botonee | (adjective) (of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm | Synonyms: botonnee |
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| botonnee | (adjective) (of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm | Synonyms: botonee |
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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 |
| (verb) put into bottles | - |
| (verb) store (liquids or gases) in bottles | - |
| bottlenose | (noun) northern Atlantic beaked whale with a bulbous forehead | Synonyms: bottle-nosed whale, bottlenose whale, Hyperoodon ampullatus |
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| (noun) any of several dolphins with rounded forehead and well-developed beak; chiefly of northern Atlantic and Mediterranean | Synonyms: bottle-nosed dolphin, bottlenose dolphin |
| bouchee | (noun) shell of puff paste | Synonyms: patty shell |
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| boucle | (noun) a fabric of uneven yarn that has an uneven knobby effect | - |
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| bouffe | (noun) opera with a happy ending and in which some of the text is spoken | Synonyms: comic opera, opera bouffe, opera comique |
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| bouillabaisse | (noun) highly seasoned Mediterranean soup or stew made of several kinds of fish and shellfish with tomatoes and onions or leeks and seasoned with saffron and garlic and herbs | - |
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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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| bounce | (noun) a light, self-propelled movement upwards or forwards | Synonyms: bound, leap, leaping, saltation, spring |
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| (noun) the quality of a substance that is able to rebound | Synonyms: bounciness |
| (noun) rebounding from an impact (or series of impacts) | Synonyms: bouncing |
| (verb) eject from the premises | - |
| (verb) hit something so that it bounces | - |
| (verb) spring back; spring away from an impact | Synonyms: bound, rebound, recoil, resile, reverberate, ricochet, spring, take a hop |
| (verb) leap suddenly | - |
| (verb) move up and down repeatedly | Synonyms: jounce |
| (verb) come back after being refused | - |
| (verb) refuse to accept and send back | - |
| bourgeoisie | (noun) the social class between the lower and upper classes | Synonyms: middle class |
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| bourne | (noun) an archaic term for a goal or destination | Synonyms: bourn |
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| (noun) an archaic term for a boundary | Synonyms: bourn |
| bourtree | (noun) a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies | Synonyms: black elder, common elder, elderberry, European elder, Sambucus nigra |
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| bouse | (verb) haul with a tackle | Synonyms: bowse |
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| boutique | (noun) a shop that sells women's clothes and jewelry | Synonyms: dress shop |
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| boutonniere | (noun) a flower that is worn in a buttonhole | - |
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| bovine | (adjective) of or relating to or belonging to the genus Bos (cattle) | Synonyms: bovid |
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| (adjective) dull and slow-moving and stolid; like an ox | - |
| (noun) any of various members of the genus Bos | - |
| bowdlerise | (verb) edit by omitting or modifying parts considered indelicate | Synonyms: bowdlerize, castrate, expurgate, shorten |
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| bowdlerize | (verb) edit by omitting or modifying parts considered indelicate | Synonyms: bowdlerise, castrate, expurgate, shorten |
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| bowline | (noun) a loop knot that neither slips nor jams | Synonyms: bowline knot |
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| bowse | (verb) haul with a tackle | Synonyms: bouse |
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| bowtie | (noun) a man's tie that ties in a bow | Synonyms: bow-tie, bow tie |
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| boxlike | (adjective) resembling a box in rectangularity | Synonyms: box-shaped, boxy |
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| boylike | (adjective) befitting or characteristic of a young boy | Synonyms: boyish, schoolboyish |
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| (adverb) like a boy | Synonyms: boyishly |
| boytrose | (adjective) resembling a cluster of grapes in form | Synonyms: botryoid, botryoidal |
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| brabble | (verb) argue over petty things | Synonyms: bicker, niggle, pettifog, quibble, squabble |
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| brace | (noun) a structural member used to stiffen a framework | Synonyms: bracing |
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| (noun) a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring | Synonyms: bitstock |
| (noun) an appliance that corrects dental irregularities | Synonyms: braces, orthodontic braces |
| (noun) a support that steadies or strengthens something else | - |
| (noun) elastic straps that hold trousers up | Synonyms: gallus, suspender |
| (noun) a rope on a square-rigged ship that is used to swing a yard about and secure it | - |
| (noun) either of two punctuation marks ({ or }) used to enclose textual material | - |
| (noun) a set of two similar things considered as a unit | Synonyms: pair |
| (noun) two items of the same kind | Synonyms: couple, couplet, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
| (verb) cause to be alert and energetic | Synonyms: arouse, energise, energize, perk up, stimulate |
| (verb) support by bracing | - |
| (verb) support or hold steady and make steadfast, with or as if with a brace | Synonyms: stabilise, stabilize, steady |
| (verb) prepare (oneself), often but not necessarily for something unpleasant or difficult | Synonyms: poise |
| brachiate | (adjective) having arms or armlike appendages | - |
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| (adjective) having widely spreading paired branches | - |
| (verb) swing from one hold to the next | - |
| brachistochrone | (noun) a curve between two points along which a body can move under gravity in a shorter time than for any other curve. | - |
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| bracteate | (adjective) having bracts | Synonyms: bracted |
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