15-letter words containing b, a, t, r
- bayeux tapestry — an 11th- or 12th-century embroidery in Bayeux, nearly 70.5 m (231 ft) long by 50 cm (20 inches) high, depicting the Norman conquest of England
- be raring to go — If you say that you are raring to go, you mean that you are very eager to start doing something.
- beam-power tube — a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.
- bearded vulture — lammergeier
- beast of burden — A beast of burden is an animal such as an ox or a donkey that is used for carrying or pulling things.
- beat generation — members of the generation that came to maturity in the 1950s, whose rejection of the social and political systems of the West was expressed through contempt for regular work, possessions, traditional dress, etc, and espousal of anarchism, communal living, drugs, etc
- bedtime reading — a book, magazine etc read at bedtime
- beef stroganoff — a dish of thin strips of beef cooked with onions, mushrooms, and seasonings, served in a sour-cream sauce
- beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
- before the fact — before the commission of the offence
- before the mast — as an apprentice seaman
- belt-and-braces — providing double security, in case one security measure should fail
- benedict arnold — Benedict, 1741–1801, American general in the Revolutionary War who became a traitor.
- benzyl butyrate — a liquid, C 11 H 14 O 2 , having a fruitlike odor, used as a plasticizer and in flavoring.
- bergamot orange — a small Asian spiny rutaceous tree, Citrus bergamia, having sour pear-shaped fruit
- berkeley castle — a castle in Gloucestershire: scene of the murder of Edward II in 1327
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- beside the mark — not striking the point aimed at
- beta conversion — (theory) A term from lambda-calculus for beta reduction or beta abstraction.
- beta-adrenergic — pertaining to or involving beta receptors
- bias (ply) tire — a motor vehicle tire having a foundation of plies of rubberized cords in a crisscross pattern of lines diagonal to the center line of the tread
- bidirectionally — in a bidirectional manner
- big bang theory — In astronomy the big bang theory is a theory that suggests that the universe was created as a result of an extremely large explosion.
- bilateral trade — a system of trading between two countries in which each country attempts to balance its trade with that of the other
- binary notation — a number system having a base of two, numbers being expressed by sequences of the digits 0 and 1: used in computing, as 0 and 1 can be represented electrically as off and on
- bioastronautics — the study of the effects of space flight on living organisms
- biostratigraphy — the examination of the ages of rock strata by using fossils
- biot-savart law — the law that the magnetic induction near a long, straight conductor, as wire, varies inversely as the distance from the conductor and directly as the intensity of the current in the conductor.
- bipartite graph — complete graph
- birch partridge — ruffed grouse
- black marketeer — A black marketeer is someone who sells goods on the black market.
- black operation — a covert and undocumented military operation
- black september — a Palestinian Terrorist group, responsible for the assassinations of Israeli athletes at the Olympic Games at Munich in 1972
- black snakeroot — a tall bugbane, Cimicifuga racemosa, of the buttercup family, of eastern North America, having thin, tapering, toothed or deeply cut leaflets and branched clusters of small, white flowers.
- black-marketeer — to sell articles in the black market.
- blank cartridge — a cartridge containing powder but no bullet: used in battle practice or as a signal
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- blue wood aster — a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.
- bluegrass state — Kentucky (used as a nickname).
- boa constrictor — A boa constrictor is a large snake that kills animals by wrapping itself round their bodies and squeezing them to death. Boa constrictors are found mainly in South and Central America and the West Indies.
- board of health — an agency with responsibility for health in state, country, etc
- board-certified — A doctor who is board-certified has passed tests and meets the standards of a board of specialists in their area of medicine.
- body toning bar — a weighted exercise bar made of steel encased in a layer of foam, used for toning and strength training.
- bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
- boston marriage — (especially in 19th-century New England) an intimate friendship between two women often maintaining a household together.
- boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
- brachistochrone — the curve between two points through which a body moves under the force of gravity in a shorter time than for any other curve; the path of quickest descent
- brachystomatous — having a short proboscis, as certain insects.
- brackett series — a series of lines in the infrared spectrum of hydrogen.
- bragging rights — notional privileges that are gained by defeating a close rival