10-letter words containing o, b
- 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
- bladderpod — any of several plants belonging to the genera Alyssoides and Lesquerella, of the mustard family, having inflated seed pods.
- blamestorm — (of colleagues in a business, government, etc) to meet in order to apportion blame for an error or failure
- blanquillo — any of several game fishes of the genus Caulolatilus, related to the tilefishes.
- 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
- blazonings — heraldic adornments
- blind copy — a copy of a letter or the like, the original of which bears no evidence that the copy was sent to some other person.
- blind door — a door having louvers permitting circulation of air.
- blind hole — a hole whose green cannot be seen by the approaching golfer because of trees or other obstructions.
- 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.
- blind-worm — a limbless European lizard, Anguis fragilis, related to the glass lizards.
- blindstory — a windowless story
- blithesome — cheery; merry
- block coal — bituminous coal that breaks into large lumps or cubical blocks.
- block lava — volcanic lava occurring as rough-surfaced jagged blocks
- block line — a rope or cable used in a block and tackle
- block mast — a short mast from the head of which a lateen yard is suspended.
- block vote — A block vote is a large number of votes that are all cast in the same way by one person on behalf of a group of people.
- blockboard — a type of plywood in which soft wood strips are bonded together and sandwiched between two layers of veneer
- blockflote — a recorder.
- blockhouse — (formerly) a wooden fortification with ports or loopholes for defensive fire, observation, etc
- 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 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.
- blood bath — a killing of many people; massacre
- blood cell — any of the cells that circulate in the blood
- blood clot — a clotted mass of blood
- blood feud — A blood feud is a long-lasting, bitter disagreement between two or more groups of people, particularly family groups. Blood feuds often involve members of each group murdering or fighting with members of the other.
- blood flow — the flow of blood through blood vessels around the body
- blood heat — Blood heat is a temperature of 37°C, which is about the same as the normal temperature of the human body.
- blood knot — barrel knot.
- blood lily — any of various bulbous plants of the genus Haemanthus, native to Africa, having clusters of red or white flowers.
- blood loss — loss of blood through bleeding
- blood lust — If you say that someone is driven by a blood lust, you mean that they are acting in an extremely violent way because their emotions have been aroused by the events around them.
- blood meal — the dried blood of animals used as a fertilizer, diet supplement for livestock, or deer repellent.
- blood test — A blood test is a medical examination of a small amount of your blood.
- blood type — Someone's blood type is the same as their blood group.
- blood work — a blood test or blood tests collectively.