12-letter words containing a, b, l, u
- black sucker — a hog sucker, Hypentelium nigricans, of eastern U.S. streams.
- black tongue — canine pellagra.
- black walnut — a North American walnut tree, Juglans nigra, with hard dark wood and edible oily nuts
- black-figure — pertaining to or designating a style of vase painting developed in Greece in the 7th and 6th centuries b.c., chiefly characterized by silhouetted figures painted in black slip on a red clay body, details incised into the design, and a two-dimensional structure of form and space.
- blackcurrant — In Europe, blackcurrants are a type of very small, dark purple fruits that grow in bunches on bushes.
- blank cheque — If someone is given a blank cheque, they are given the authority to spend as much money as they need or want.
- blastulation — the process of blastula formation
- blaue reiter — der Blaue Reiter. a group of German expressionist painters formed in Munich in 1911, including Kandinsky and Klee, who sought to express the spiritual side of man and nature, which they felt had been neglected by impressionism
- blue catfish — a large freshwater catfish, Ictalurus furcatus, that is a popular food fish in the states of the Mississippi River valley.
- blue jasmine — a southern U.S. shrubby vine, Clematis crispa, of the buttercup family, having solitary, bell-shaped, blue or bluish-purple to pink flowers and bearing fruit with silky appendages.
- blue-sky law — a state law regulating the trading of securities: intended to protect investors from fraud
- bluefin tuna — the largest tuna (Thunnus thynnus): it has bright red flesh and is important as a game and food fish
- blues guitar — blues guitar music
- bluesnarfing — the practice of using one Bluetooth-enabled mobile phone to steal contact details, ring tones, images, etc from another
- boatbuilding — Boatbuilding is the craft or industry of making boats.
- borough hall — a building housing the administrative offices of a borough.
- boudin blanc — a boiled sausage made with light-colored meat, as veal or chicken, and without blood
- bougainville — an island in the W Pacific, in Papua New Guinea: the largest of the Solomon Islands: unilaterally declared independence in 1990; occupied by government troops in 1992, and granted autonomy in 2001. Chief town: Kieta. Area: 10 049 sq km (3880 sq miles)
- boulangerite — a bluish lead-gray mineral, lead antimony sulfide, Pb 5 Sb 4 S 11 , a minor ore of lead.
- boulder clay — an unstratified glacial deposit consisting of fine clay, boulders, and pebbles
- boulevardier — (originally in Paris) a fashionable man, esp one who frequents public places
- bounce flash — a flash lamp designed to produce a bounced flash.
- brass plaque — a brass plate screwed to a wall or other structure and engraved with a name or other information, esp to commemorate an important event
- breastplough — a plough driven by the worker's breast, often used to pare turf
- bridal suite — a room or set of rooms in a hotel for newly married couples
- brushability — the quality of being brushable
- bubble dance — a solo dance by a nude or nearly nude woman, as in a burlesque show, using one or more balloons for covering.
- bubble float — a hollow spherical float that can be weighted with water to aid casting
- buccolingual — of or relating to the cheek and tongue.
- buffalo bill — nickname of William Frederick Cody. 1846–1917, US showman who toured Europe and the US with his famous Wild West Show
- buffalo bird — a cowbird, Molothrus ater, of North America.
- buffalo fish — any of a genus (Ictiobus) of large, humpbacked, freshwater sucker fishes found in North America
- buffalo gnat — any of various small North American blood-sucking dipterous insects of the genus Simulium and related genera: family Simuliidae
- buffalo robe — a carriage robe or rug made of the skin of the bison, dressed with the hair on
- buffaloberry — any shrub of the genus Shepherdia native to North America
- buffel grass — grass used for pasture in Africa, India, and Australia
- bulk carrier — a ship that carries unpackaged cargo, usually consisting of a single dry commodity, such as coal or grain
- bull mastiff — a large powerful breed of dog with a short usually fawn or brindle coat, developed by crossing the bulldog with the mastiff
- bull-baiting — the setting of dogs on a chained or confined bull, formerly a popular pastime in England
- bullamakanka — an imaginary very remote and backward place
- bullet train — a passenger train that travels at very high speed
- bullock cart — a cart pulled by one or two bullocks
- bumbleheaded — clumsy, plodding, or foolish: He stumbled through the talk in his bumbleheaded way.
- bur marigold — any plant of the genus Bidens that has yellow flowers and pointed fruits that cling to fur and clothing: family Asteraceae (composites)
- burglarproof — safeguarded or secure against burglary.
- burial mound — a barrow
- burj khalifa — a slender tapering skyscraper in Dubai; completed in 2009; the world's tallest man-made structure, standing at 828m (2716 ft)
- burnt almond — a sweet consisting of an almond enclosed in burnt sugar
- burro's tail — a succulent Mexican plant, Sedum morganianum, of the stonecrop family, bearing small, rose-colored flowers and long, hanging, nearly cylindrical stems with closely packed whitish-green leaves.
- bush leaguer — Also called busher. Baseball. a player in a minor league. an incompetent player, as one who behaves or plays as if he or she belonged in a minor league.