10-letter words containing b, o, a, k
- black hole — Black holes are areas in space, where gravity is so strong that nothing, not even light, can escape from them. Black holes are thought to be formed by collapsed stars.
- 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 look — If someone gives you a black look, they look at you in a way that shows that they are very angry about something.
- black mold — any fungus of the family Mucoraceae, especially Rhizopus nigricans, that forms a black, furry coating on foodstuffs.
- black monk — a Benedictine monk
- black opal — any opal of a dark coloration, not necessarily black
- black pope — the head of the Jesuit order (so called from the power he once possessed and from the black habit worn by the order).
- 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.
- blackamoor — a Black African or other person with dark skin
- blackboard — A blackboard is a dark-coloured board that you can write on with chalk. Blackboards are often used by teachers in the classroom.
- 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
- blastodisk — germinal disk
- block coal — bituminous coal that breaks into large lumps or cubical blocks.
- block lava — volcanic lava occurring as rough-surfaced jagged blocks
- block mast — a short mast from the head of which a lateen yard is suspended.
- blockboard — a type of plywood in which soft wood strips are bonded together and sandwiched between two layers of veneer
- blood bank — A blood bank is a place where blood which has been taken from blood donors is stored until it is needed for people in hospital.
- body track — the tracks of a railroad yard used for switching or sorting cars.
- boko haram — a militant and violent Islamic organization established in NE Nigeria in 2002 and also active in Niger, Chad, and Cameroon
- bone black — a fine charcoal made by burning animal bones in closed containers: used as a pigment, in refining sugar, etc.
- boneshaker — an early type of bicycle having solid tyres and no springs
- bonus pack — anything sold with a product and marketed as a useful and free extra
- book match — a match in or from a matchbook.
- book share — a share of a mutual fund credited to the account of a shareholder without the physical issuance of a certificate evidencing ownership.
- 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.
- bookmaking — Bookmaking is the activity of taking people's money when they bet and paying them money if they win.
- bookmarked — a ribbon or other marker placed between the pages of a book to mark a place.
- bookreader — DEC's CD-ROM-based on-line documentation browser.
- bootmaking — the activity of making boots and shoes
- borah peak — a mountain in central Idaho, in the Lost River Range: highest peak in Idaho. 12,662 feet (3861 meters).
- boskop man — the undated cranial remains of a possible Homo sapiens found in the Transvaal of South Africa.
- bounceback — the act or an instance of bouncing back, recovering, or recuperating: Fall sales have experienced a tremendous bounceback.
- brahmaloka — the highest part of Kamaloka, where refined souls exist in blissful contemplation of Brahma.
- brailowsky — Alexander [al-ig-zan-der,, -zahn-;; Russian uh-lyi-ksahn-dr] /ˌæl ɪgˈzæn dər,, -ˈzɑn-;; Russian ʌ lyɪˈksɑn dr/ (Show IPA), 1896–1976, Russian pianist.
- brake shoe — the curved metal casting to which the brake lining is riveted in a drum brake
- break down — If a machine or a vehicle breaks down, it stops working.
- break into — If someone breaks into a building, they get into it by force.
- breakfront — (of a bookcase, bureau, etc) having a slightly projecting central section
- breakpoint — an instruction inserted by a debug program causing a return to the debug program
- breastwork — a temporary defensive work, usually breast-high
- brook farm — an experimental communist community established by writers and scholars in West Roxbury, Massachusetts, from 1841 to 1847
- brook park — a city in NE Ohio.
- brookhaven — a town in SW Mississippi.
- bulk cargo — unpackaged cargoes, such as grain or coal
- cabin hook — a hook and eye for fastening a cabinet door or the like.
- calicoback — harlequin bug
- chalkboard — A chalkboard is a dark-coloured board that you can write on with chalk. Chalkboards are often used by teachers in the classroom.
- cheboksary — a port in W central Russia on the River Volga: capital of the Chuvash Republic. Pop: 446 000 (2005 est)
- choke back — If you choke back tears or a strong emotion, you force yourself not to show your emotion.