13-letter words containing u, a
- boundary line — a line marking one of the edges of a playing area
- boundary peak — a peak in SW Nevada, in the White Mountains, near the California border: highest elevation in Nevada. 13,143 feet (4006 meters).
- boundary scan — The use of scan registers to capture state from device input and output pins. IEEE Standard 1149.1-1990 describes the international standard implementation (sometimes called JTAG after the Joint Test Action Group which began the standardisation work).
- bouquet garni — A bouquet garni is a bunch of herbs that are tied together and used in cooking to add flavour to the food.
- bourdon gauge — a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases the tube tends to straighten and the pointer indicates the applied pressure
- boutros-ghali — ˈBoutros (ˈbutroʊs ) ; bo̅oˈtrōs) 1922- ; Egypt. diplomat: secretary-general of the United Nations (1992-96)
- brachiosaurus — a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known
- brachypterous — having very short or incompletely developed wings
- braggadocious — boastful
- brain surgeon — a surgeon who specializes in brain surgery
- brain surgery — operation on the brain
- brain truster — a member of a brain trust; an important but usually unofficial adviser.
- brandy butter — butter and sugar creamed together with brandy and served with Christmas pudding, etc
- brass foundry — a foundry that makes things from brass
- brass rubbing — A brass rubbing is a picture made by placing a piece of paper over a brass plate that has writing or a picture on it, and rubbing it with a wax crayon.
- brass-rubbing — an antiquarian's technique for copying designs from incised brass memorial slabs and the like.
- brassfounding — the practice of making things from brass
- brassicaceous — belonging to the plant family Brassicaceae, an alternative name for the plant family Cruciferae.
- brazen it out — to act in a bold way as if one need not be ashamed
- bread pudding — a rich cake made with bread soaked in milk, eggs, dried fruit and spices and baked, usually eaten cold
- break through — If you break through a barrier, you succeed in forcing your way through it.
- breakthroughs — a military movement or advance all the way through and beyond an enemy's front-line defense.
- brigham young — Andrew (Jackson, Jr.) born 1932, U.S. clergyman, civil-rights leader, politician, and diplomat: mayor of Atlanta, Georgia, 1981–89.
- brilliant cut — a cut for gems
- brilliant-cut — a cut intended to enhance the brilliance of a gem with the least possible sacrifice of weight, characterized by a form resembling two pyramids set base to base, truncated so as to give a broad table and a very small culet, and having from 18 to 104 facets, 58 being typical.
- brittany blue — a medium greenish blue.
- brown mustard — black mustard. See under mustard (def 2).
- brussels lace — a fine lace with a raised or appliqué design
- brutalization — to make brutal.
- buccaneerings — the characteristic actions of a buccaneer
- buck and wing — a boisterous tap dance, derived from Black and Irish clog dances
- buck sergeant — a newly promoted sergeant
- bucket ladder — a series of buckets that move in a continuous chain, used to dredge riverbeds, etc, or to excavate land
- buckeye state — Ohio (used as a nickname).
- bud variation — any variation in a bud due to changes in either its genetic composition or environment or both such that the resulting flower, fruit, or shoot differs from others of the same plant or species.
- buenas noches — good night
- bufadienolide — any of a family of steroid lactones, occurring in toad venom and squill, that possess cardiac-stimulating and antitumor activity.
- buffalo berry — a shrub (genus Shepherdia) of the oleaster family, native to W North America, with silvery leaves
- buffalo chips — the dried dung of buffalo used as fuel, especially by early settlers on the western plains.
- buffalo cloth — a heavyweight woolen fabric constructed in twill weave and having a shaggy pile.
- buffalo grass — a short grass, Buchloë dactyloides, growing on the dry plains of the central US
- buffalo grove — a city in NE Illinois.
- buffalo plaid — a plaid with large blocks formed by the intersection of two different-color yarns, typically red and black.
- buffalo wings — spicy fried segments of chicken wings, usually served with celery sticks and a sauce of blue cheese
- building land — land on which construction can take place
- built-up mast — a wooden mast formed of several shaped, longitudinal pieces joined together.
- bulbourethral — of or relating to the rounded mass of tissue surrounding the urethra at the root of the penis.
- bulkhead deck — the uppermost continuous deck in the hull of a vessel, forming watertight compartments with the main transverse bulkheads.
- bull elephant — an adult male elephant
- bullace grape — the thick-skinned musk-scented purple grape produced by this plant: used to make wine