10-letter words containing l, o, b, u
- blue cross — a nonprofit health insurance organization offering hospitalization and medical benefits to subscribers, esp. to groups of employees and their families
- blue goose — a variety of the snow goose that has a bluish-grey body and white head and neck
- blue heron — any of the American varieties of heron with bluish or bluish-gray plumage, as the great blue heron.
- blue lotus — either of two Egyptian water lilies of the genus Nymphaea, as N. caerulea (blue lotus) having light blue flowers, or N. lotus (white lotus) having white flowers.
- blue mould — any fungus of the genus Penicillium that forms a bluish mass on decaying food, leather, etc
- blue phlox — a plant, Phlox divaricata, of eastern North America, having creeping, rooting stems and mauve flowers.
- blue point — a Siamese cat having a light-colored body and darker, bluish-gray points.
- blue poppy — a papaveraceous plant, Meconopsis betonicifolia, grown for its showy sky-blue flowers
- bluebonnet — a broad, flat cap of blue woolen cloth, formerly worn in Scotland
- bluebottle — A bluebottle is a large fly with a shiny dark-blue body.
- blues-rock — a blend of rock-'n'-roll and blues.
- bluethroat — a small brownish European songbird, Cyanosylvia svecica, related to the thrushes, the male of which has a blue throat: family Muscicapidae
- bluetongue — an Australian lizard, Tiliqua scincoides, having a cobalt-blue tongue
- blusterous — to roar and be tumultuous, as wind.
- board rule — a measuring device for estimating the number of board feet in a quantity of wood
- boastfully — given to or characterized by boasting.
- body fluid — any of various types of fluid found in the body of a human or animal, as blood or urine.
- body louse — See under louse (def 1).
- bog turtle — a small turtle, Clemmys muhlenbergi, inhabiting swamps and slow, muddy-bottomed streams in scattered areas from New York to North Carolina.
- bogon flux — /boh'gon fluhks/ A measure of a supposed field of bogosity emitted by a speaker, measured by a bogometer; as a speaker starts to wander into increasing bogosity a listener might say "Warning, warning, bogon flux is rising". See quantum bogodynamics.
- böhm flute — a type of flute in which the holes are covered with keys; the standard type of modern flute
- boilersuit — a one-piece work garment consisting of overalls and a shirt top usually worn over ordinary clothes to protect them
- bois brule — métis (def 2).
- bois-brûlé — a mixed-race person of Canadian Indian and White (usually French Canadian) ancestry; Métis
- bonus ball — (in the National Lottery draw) a ball randomly selected after the first six balls, containing a number which influences the amount of prize money paid
- book louse — any of various small, usually wingless, insects (order Psocoptera) that infest and destroy old books
- book lungs — primitive lungs of many arachnids, consisting of pagelike layers of tissue over which air circulates for respiration
- book value — In business, the book value of an asset is the value it is given in the account books of the company that owns it.
- bottle out — If you bottle out, you lose your courage at the last moment and do not do something you intended to do.
- boucicault — Dion (ˈdaɪɒn), real name Dionysius Lardner Boursiquot. 1822–90, Irish dramatist and actor. His plays include London Assurance (1841), The Octoroon (1859), and The Shaughran (1874)
- bouillotte — a French card game similar to poker
- boulangism — the doctrines of militarism and reprisals against Germany, advocated, especially in the 1880s, by the French general Boulanger.
- bouldering — rock climbing on large boulders or small outcrops either as practice or as a sport in its own right
- boullework — elaborate inlaid work of woods, metals, tortoiseshell, ivory, etc.
- bounceable — to spring back from a surface in a lively manner: The ball bounced off the wall.
- bouncingly — in a bouncing manner
- bowlingual — a device that allegedly translates a dog’s barks and grunts into a human language
- box column — a hollow wooden column, as for a porch, usually having a rectangular cross section.
- box turtle — any of several North American terrapins (genus Terrapene) with a hinged shell that can be completely closed: usually found on land
- brown lung — a debilitating lung disease resembling emphysema, occurring among textile workers from inhalation of cotton dust.
- bubble-top — a bulletproof, transparent dome, as over the rear section of an automobile
- bubonocele — an incomplete hernia in the groin; partial inguinal hernia
- buddhology — the study of Buddha and of Buddhahood.
- buffaloing — any of several large wild oxen of the family Bovidae. Compare bison, Cape buffalo, water buffalo.
- build down — a process for reducing armaments, especially the number of nuclear weapons held by the U.S. and the U.S.S.R., by eliminating several older weapons for each new one that is deployed.
- build into — to make (something) a definite part of (a contract, agreement, etc)
- build-down — a gradual decrease in nuclear weapons, armed forces, etc., esp. by an agreement in which a smaller number of newer weapons would replace older ones
- bulbaceous — bulbous
- bulk cargo — unpackaged cargoes, such as grain or coal
- bull block — a machine for drawing wire in which the wire is pulled through the dies by a power-operated drum.