10-letter words containing b, i, o, s
- bipetalous — having two petals
- bird louse — any of an order (Mallophaga) of small, wingless insects with biting mouthparts, that live as external parasites on birds
- birostrate — having two beaks or beak-like projections
- birthstone — a precious or semiprecious stone associated with a month or sign of the zodiac and thought to bring luck if worn by a person born in that month or under that sign
- birthstool — a specially shaped seat formerly used in childbirth.
- bishopbird — any African weaverbird of the genus Euplectes (or Pyromelana), the males of which have black plumage marked with red or yellow
- bismuthous — of or containing bismuth in the trivalent state
- bisphenoid — a tetrahedral form, each edge of which is bisected by the perpendicular bisecting the edge that does not intersect it.
- bitou bush — type of sprawling woody shrub
- bituminous — of the nature of bitumen, esp. with regard to its color and combustibility
- blastodisc — the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles.
- blastodisk — germinal disk
- blazonings — heraldic adornments
- blind spot — If you say that someone has a blind spot about something, you mean that they seem to be unable to understand it or to see how important it is.
- blind-spot — Also called blind spot. an area in which radio or cell phone signals are weak and their reception poor.
- blindstory — a windowless story
- blithesome — cheery; merry
- bloodiness — the state of being bloody
- bloodstain — A bloodstain is a mark on a surface caused by blood.
- board side — the broad side of a piece of lumber.
- body shirt — a close-fitting shirt or blouse having a shape and seams that follow the contours of the body.
- boehmenism — the mystical doctrines or conceptions of Jakob Böhme.
- boehmenist — a supporter or adherent of Boehmenism.
- bog spavin — enlargement of the hock of a horse by accumulation in the joint, usually caused by inflammation or injury, and often resulting in lameness
- 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 d'arc — Osage orange (def 1).
- bois-brûlé — a mixed-race person of Canadian Indian and White (usually French Canadian) ancestry; Métis
- boisbriand — a town in S Quebec, in E Canada, near Montreal.
- boisterous — Someone who is boisterous is noisy, lively, and full of energy.
- bollandist — any of the editors of the Acta Sanctorum.
- bolsheviks — a member of the more radical majority of the Social Democratic Party, 1903–17, advocating immediate and forceful seizure of power by the proletariat. (after 1918) a member of the Russian Communist Party.
- bolshevism — Bolshevism is the political system and ideas that Lenin and his supporters introduced in Russia after the Russian Revolution of 1917.
- bolshevist — a follower or advocate of the doctrines or methods of the Bolsheviks.
- bolshevize — to bring into line with Communist ideology
- bolstering — a long, often cylindrical, cushion or pillow for a bed, sofa, etc.
- bona fides — Someone's bona fides are their good or sincere intentions.
- bonamiasis — a disease affecting oysters, caused by the parasite Bonamia ostreae
- bonnilasse — a pretty girl
- boosterish — designed to boost business; optimistic
- boosterism — the practice of actively promoting a city, region, etc, and its local businesses
- boot virus — An MS-DOS virus that infects the boot record program on hard disks and floppy disks or the master boot record on hard disks. The virus gets loaded into memory before MS-DOS and takes control of the computer, infecting any floppy disks subsequently accessed. An infected boot disk may stop the computer starting up at all.
- bordelaise — denoting a brown sauce flavoured with red wine and sometimes mushrooms
- boringness — the quality of being boring
- boris bike — any bicycle rented out by London's public bicycle hire scheme
- borrowings — a company's liabilities or indebtedness
- boston ivy — a climbing vine (Parthenocissus tricuspidata) of the grape family, native to Japan and China, having shield-shaped leaves and purple berries: often grown to cover walls
- bostonians — of, relating to, or typical of Boston, Mass., or its residents: a Bostonian childhood; Bostonian reserve.
- bosun bird — tropic bird.
- boswellize — to write an account of in the detailed manner of Boswell.