16-letter words containing r, u, n, a
- belgian tervuren — one of a Belgian breed of medium-sized dogs having a long, straight coat, fawn to mahogany in color, differing from the Belgian sheepdog only in color.
- benguela current — a strong ocean current in the South Atlantic, flowing northward along the SW coast of Africa
- bermuda triangle — an area in the Atlantic Ocean bounded by Bermuda, Puerto Rico, and Florida where ships and aeroplanes are alleged to have disappeared mysteriously
- bertrand russell — (person) (1872-1970) A British mathematician, the discoverer of Russell's paradox.
- binocular fusion — fusion (def 5a).
- binocular-fusion — the act or process of fusing; the state of being fused.
- binuclear family — a social unit composed of an extended family, usually the children and subsequent spouses of divorced parents.
- birthday honours — (in Britain) honorary titles conferred on the official birthday of the sovereign
- blind man's rule — a carpenter's rule having large numbers to permit its reading in dim light.
- blue dawn-flower — a tropical American vine, Ipomoea acuminata, of the morning glory family, having large, funnel-shaped flowers that turn from blue to pink.
- blue-green algae — any of a division (Cyanophycota) of photosynthetic monerans, microorganisms that contain a blue pigment which obscures the chlorophyll; cyanobacteria
- bluegrass region — a region in central Kentucky, famous for its horse farms and fields of bluegrass.
- board of inquiry — a group set up to inquire into accidents, etc
- bonded warehouse — a warehouse in which dutiable goods are deposited until duty is paid or the goods are cleared for export
- boundary dispute — dispute between neighbours about the boundary between their properties
- branchiopneustic — breathing by means of gills, as certain aquatic insect larvae.
- brandenburg gate — the only remaining city gate in Berlin, built by Friedrich Wilhelm II of Prussia in 1788–1791 as a symbol of peace and now one of the city's landmarks
- brass instrument — a musical wind instrument of brass or other metal with a cup-shaped mouthpiece, as the trombone, tuba, French horn, trumpet, or cornet.
- bread and butter — Something that is the bread and butter of a person or organization is the activity or work that provides the main part of their income.
- bread-and-butter — providing a livelihood or basic source of income; supplying the basic needs of life: a bread-and-butter job; the agency's bread-and-butter account.
- break new ground — to do something that has not been done before
- breeding plumage — the plumage assumed by a male bird during the courtship period, especially in those species that are more colorful at this period.
- bren gun carrier — (esp in World War II) a small armoured vehicle equipped with a Bren gun
- british honduras — Belize
- bronchopneumonia — inflammation of the lungs, originating in the bronchioles
- brown-eyed susan — a composite plant, Rudbeckia triloba, of the southeastern U.S., having a single flower with yellow rays darkening to an orange orbrown at the base and a brownish-black disk.
- buckthorn family — the plant family Rhamnaceae, characterized by shrubs and trees having alternate, simple leaves, clusters of small flowers, and fruit in the form of a drupe or capsule, and including the buckthorn, cascara, and New Jersey tea.
- bullet-resistant — not allowing bullets to pass through
- bundled software — software sold as part of a package with computers or other hardware or software
- bunker mentality — a defensive attitude in which others are seen as hostile or potentially hostile
- buoyancy chamber — an enclosed section of a canoe, float, ship or other object that contains air, foam, or another buoyant substance in order to help maintain buoyancy
- bureau de change — a place where foreign currencies can be exchanged
- burge's language — Unnamed functional language based on lambda-calculus. Recursive Programming techniques", W.H. Burge, A-W 1975.
- burnet saxifrage — a Eurasian umbelliferous plant of the genus Pimpinella, having umbrella-like clusters of white or pink flowers
- business manager — a person who ensures the running of a business by managing the work of relevant staff
- butternut squash — a variety of squash with brownish-yellow rind and orange flesh
- button snakeroot — blazing star (sense 1)
- buying behaviour — the behaviours displayed by consumers when they purchase things, such as preferences, price points, etc
- byzantine church — Orthodox Church (def 1).
- caducibranchiate — (of many amphibians, such as frogs) having gills during one stage of the life cycle only
- calcium arsenate — a toxic, white powder, Ca3(AsO4)2, used as an insecticide in the form of a spray or dust
- california quail — a quail, Callipepla californica, of the western coast of the U.S., having grayish-brown plumage with black, white, and chestnut markings.
- camborne-redruth — a former (until 1974) urban district in SW England, in Cornwall: formed in 1934 by the amalgamation of the neighbouring towns of Camborne and Redruth. Pop: 39 936 (2001)
- canada bluegrass — a Eurasian grass, Poa compressa, naturalized in North America, having creeping rootstocks and bluish-green leaves.
- canaries current — an ocean current of the North Atlantic flowing southward past Spain and North Africa.
- cantankerousness — disagreeable to deal with; contentious; peevish: a cantankerous, argumentative man.
- canterbury bells — a cultivated bellflower (Campanula medium) with white, pink, or blue cuplike flowers
- canterbury tales — an unfinished literary work by Chaucer, largely in verse, consisting of stories told by pilgrims on their way to the shrine of St. Thomas à Becket at Canterbury
- carbon bisulfide — carbon disulfide
- carbon disulfide — a heavy, volatile, colorless liquid, CS2, highly flammable and poisonous, used as a solvent, insecticide, etc.