10-letter words containing o, b, t, a
- bipetalous — having two petals
- bipolarity — having two poles, as the earth.
- birostrate — having two beaks or beak-like projections
- bitonality — the quality of two musical keys being played simultaneously
- black knot — a fungal disease of plums and cherries caused by Dibotryon morbosum, characterized by rough black knotlike swellings on the twigs and branches
- black spot — If you describe a place, time, or part of a situation as a black spot, you mean that it is particularly bad or likely to cause problems.
- blackstone — Sir William. 1723–80, English jurist noted particularly for his Commentaries on the Laws of England (1765–69), which had a profound influence on jurisprudence in the US
- blackthorn — a thorny Eurasian rosaceous shrub, Prunus spinosa, with black twigs, white flowers, and small sour plumlike fruits
- blamestorm — (of colleagues in a business, government, etc) to meet in order to apportion blame for an error or failure
- blastocoel — the cavity within a blastula
- blastocyst — the blastula of mammals: a sphere of cells (trophoblast) enclosing an inner mass of cells and a fluid-filled cavity (blastocoel)
- blastoderm — the layer of cells that surrounds the blastocoel of a blastula
- 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
- blastomere — any of the cells formed by cleavage of a fertilized egg
- blastopore — the opening of the archenteron in the gastrula that develops into the anus of some animals
- block mast — a short mast from the head of which a lateen yard is suspended.
- bloggerati — those considered to be important or influential in the world of blogging
- blogstream — the publication on the internet of content from weblogs rather than from mainstream media sources
- blood bath — a killing of many people; massacre
- blood heat — Blood heat is a temperature of 37°C, which is about the same as the normal temperature of the human body.
- bloodstain — A bloodstain is a mark on a surface caused by blood.
- bloviation — a lengthy but insubstantial speech
- bluethroat — a small brownish European songbird, Cyanosylvia svecica, related to the thrushes, the male of which has a blue throat: family Muscicapidae
- board foot — a unit of board measure: the cubic content of a piece of wood one foot square and one inch thick
- boastfully — given to or characterized by boasting.
- boat drill — practice in launching the lifeboats and taking off the passengers and crew of a ship
- boat patch — an oval patch for plywood, terminating in a point at each end.
- boat shoes — shoes for wearing on board boats, often laced moccasins
- boat train — A boat train is a train that takes you to or from a port.
- boatwright — a craftsman who builds wooden boats.
- bobble hat — A bobble hat is a woollen hat with a bobble on it.
- boca raton — city in SE Fla., near Fort Lauderdale: pop. 75,000
- body track — the tracks of a railroad yard used for switching or sorting cars.
- bollandist — any of the editors of the Acta Sanctorum.
- bomb blast — the impact caused by a bomb
- bon vivant — a person who enjoys luxuries, esp good food and drink
- bone earth — bone ash.
- bonnethead — a hammerhead shark, Sphyrna tiburo, found in shallow waters from Brazil to Massachusetts, having a spade-shaped head.
- booby-trap — A booby-trap is something such as a bomb which is hidden or disguised and which causes death or injury when it is touched.
- book match — a match in or from a matchbook.
- boot-faced — wearing a stern, disapproving expression
- booth-babe — an attractive woman hired to draw attendees of commercial exhibitions into promotional booths
- bootloader — a bootstrap loader
- bootmaking — the activity of making boots and shoes
- booty call — a meeting arranged for the purpose of having sex
- border tax — a tax system for imports and exports, especially one that compensates for internal taxes in Common Market countries by levying fees or paying rebates.
- boston bag — a two-handled bag for carrying books, papers, etc.
- bostonians — of, relating to, or typical of Boston, Mass., or its residents: a Bostonian childhood; Bostonian reserve.
- botany bay — an inlet of the Tasman Sea, on the SE coast of Australia: surrounded by the suburbs of Sydney