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15-letter words containing a, b, o, r, l

  • binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
  • biobibliography — a bibliography containing biographical sketches of the authors listed.
  • 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.
  • black horehound — a hairy unpleasant-smelling chiefly Mediterranean plant, Ballota nigra, having clusters of purple flowers: family Lamiaceae (labiates)
  • black operation — a covert and undocumented military operation
  • 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.
  • bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
  • blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
  • blenheim orange — a type of apple tree bearing gold-coloured apples
  • blockade runner — a person, ship etc that tries to carry goods through a blockade
  • blockade-runner — a ship or person that passes through a blockade.
  • blue wood aster — a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.
  • board of health — an agency with responsibility for health in state, country, etc
  • board of parole — an agency that determines which prisoners are to be released on parole
  • boarding school — A boarding school is a school which some or all of the pupils live in during the school term. Compare day school.
  • boolean algebra — a system of symbolic logic devised by George Boole to codify logical operations. It is used in computers
  • borderline case — a person or thing that is not clearly classifiable as something
  • brachiocephalic — of, relating to, or supplying the arm and head
  • branchial pouch — one of a series of rudimentary outcroppings of the inner pharyngeal wall, corresponding to the branchial grooves on the surface.
  • brave new world — If someone refers to a brave new world, they are talking about a situation or system that has recently been created and that people think will be successful and fair.
  • break the mould — If you say that someone breaks the mould, you mean that they do completely different things from what has been done before or from what is usually done.
  • breaking plough — a plough with a long shallow mouldboard for turning virgin land or sod land
  • bristol channel — an inlet of the Atlantic, between S Wales and SW England, merging into the Severn estuary. Length: about 137 km (85 miles)
  • bristol fashion — clean and neat, with newly painted and scrubbed surfaces, brass polished, etc
  • bronchial tubes — the bronchi or their smaller divisions
  • bronzed grackle — the western subspecies of the American bird, the common grackle, Quiscalus quiscula versicolor, having bronzy, iridescent plumage.
  • brown-tail moth — a white moth, Nygmia phaerrhoea, having a brown tuft at the end of the abdomen, the larvae of which feed on the foliage of various shade and fruit trees.
  • bucket elevator — a chain of buckets for raising liquids or materials to a higher level
  • buffalo currant — an ornamental shrub, Ribes odoratum, of the central U.S., having showy, drooping clusters of fragrant yellow flowers and edible black fruit.
  • buffalo soldier — (formerly, especially among American Indians) a black soldier.
  • bulimia nervosa — a disorder characterized by compulsive overeating followed by vomiting: sometimes associated with anxiety about gaining weight
  • bullnose header — bull header (def 1).
  • bullnose-header — Also called bullnose header. a brick having one of the edges across its width rounded for laying as a header in a sill or the like.
  • bullock's heart — the large, edible fruit of a tropical American tree, Annona reticulata.
  • bullock's-heart — the large, edible fruit of a tropical American tree, Annona reticulata.
  • calcium blocker — any of a group of drugs that prevent the influx of calcium into excitable tissues such as smooth muscle of the heart or arterioles, used in the treatment of angina, hypertension, and certain arrhythmias.
  • calydonian boar — a savage boar sent by Artemis to destroy Calydon, a city in Aetolia, because its king had neglected to sacrifice to her. It was killed by Meleager, the king's son
  • camelot library — (library)  
  • cannonball tree — a South American tree, Couroupita guianensis, bearing round, woody-husked fruit whose shells are used to make containers and utensils.
  • carboxylic acid — any of a class of organic acids containing the carboxyl group
  • casual labourer — a person who is employed on a temporary, rather than a permanent or regular basis
  • centrifugal box — a revolving chamber, used in the spinning of manufactured filaments, in which the plastic fibers, subjected to centrifugal force, are slightly twisted and emerge in the form of yarn wound into the shape of a hollow cylinder.
  • cerebral cortex — the outermost layer of the cerebrum that is the locus of higher brain processes
  • cerebrovascular — of or relating to the blood vessels and the blood supply of the brain
  • chamber counsel — a counsel who advises in private and does not plead in court
  • chandler wobble — a slight, irregular nutation of the earth's rotational axis with a period of c. 428 days
  • charcoal burner — (formerly) a person whose work was making charcoal by burning
  • charcoal-burner — a device that burns charcoal, as a stove or brazier.
  • charles coulomb — Charles Augustin de [sharl oh-gy-stan duh] /ʃarl oʊ güˈstɛ̃ də/ (Show IPA), 1736–1806, French physicist and inventor.
  • chocolate brown — a dark brown
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