12-letter words containing m, t, b
- birth family — one's biological parents and siblings, as contrasted with one's adoptive family.
- birth mother — the woman who gives birth to a child, regardless of whether she is the genetic mother or subsequently brings up the child
- birth trauma — an emotional shock caused by being born.
- bismuthinite — a grey mineral consisting of bismuth sulphide in orthorhombic crystalline form. It occurs in veins associated with tin, copper, silver, lead, etc, and is a source of bismuth. Formula: Bi2S3
- biting mania — an epidemic in which people have a compulsion to bite others, as in 15th-century Germany, Italy, and the Netherlands.
- biting midge — any small fragile dipterous fly of the family Ceratopogonidae, most of which suck the blood of mammals, birds, or other insects
- bitter lemon — a non-alcoholic, fizzy drink with a lemon flavour
- bitter melon — balsam pear.
- blabbermouth — a person who talks too much or indiscreetly
- black bottom — a dance of the late 1920s that originated in America, involving a sinuous rotation of the hips
- black market — If something is bought or sold on the black market, it is bought or sold illegally.
- black stream — a warm ocean current in the Pacific, flowing N along the E coast of Taiwan, NE along the E coast of Japan, and continuing in an easterly direction into the open Pacific.
- black-market — to black-marketeer.
- blandishment — the act of blandishing; cajolery
- blastomycete — any of a genus (Blastomyces) of yeastlike imperfect fungi that cause diseases in people and animals
- blind summit — a point on a road where a vehicle approaching the top of a hill or incline cannot see vehicles approaching up the other side of the hill
- block system — the system whereby a railway is divided up into separate sections of track where only one train can travel at a time
- bloemfontein — a city in central South Africa: capital of Free State province and judicial capital of the country. Pop: 111 698 (2001)
- blossom into — the flower of a plant, especially of one producing an edible fruit.
- blue helmets — armed troops under the sponsorship of the United Nations, used for peacekeeping
- blue melilot — a European plant, Trigonella caerulea, of the legume family, having long-stalked clusters of blue and white flowers.
- boatsmanship — seamanship as applied to boats, especially rowboats and motorboats.
- boehm system — a system of improved fingering and keying for the flute and clarinet, invented by the German musician Theobald Boehm (1794–1881).
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- bomb shelter — a shelter, usually underground, in which people take refuge from bomb attacks
- bomber pilot — the pilot of a bomber
- booch method — (programming) A widely used object-oriented analysis and object-oriented design method.
- book matches — safety matches made of paper and fastened into a small cardboard folder
- boom-or-bust — boom-and-bust.
- boomer state — Oklahoma
- booster pump — A booster pump is a pump which is used where pressure is low and needs to be increased.
- bottom break — a branch coming from the bottom of a plant stem, usually formed by pinching and disbudding.
- bottom grass — any grass that grows on bottoms or lowlands.
- bottom house — the open space beneath a house built upon high pillars
- bottom quark — a type of quark with a mass of c. 4.7 to 5.3 GeV/c2, a negative charge that is 1⁄3 the charge of an electron, zero charm, and zero strangeness
- bottom round — a cut of beef taken from outside the round, which is below the rump and above the upper leg.
- bottom yeast — a yeast whose cells, in the manufacture of wine and lager beer, fall to the bottom as a sediment.
- bottom-liner — a person, as an executive, accountant, or stockholder, who puts the net profits of a business ahead of all other considerations.
- bottomfeeder — (networking) An RSS aggregator.
- bottomlessly — from a bottomless point of view
- boxing match — a competition between two boxers
- bracket lamp — a wall light that is attached to the wall by a bracket
- brain tumour — a tumour that is situated in the brain
- brainstormer — a person who brainstorms
- breastsummer — a girder extending across a large opening in a building to support the wall above, used primarily over shop-fronts
- brigham city — a city in N Utah.
- bristlemouth — any of several small, deep-sea fishes of the family Gonostomatidae, having numerous sharp, slender teeth covering the jaws.
- british warm — an army officer's short thick overcoat
- bromoacetone — a colorless and highly toxic liquid, CH 2 BrCOCH 3 , used as a lachrymatory compound in tear gas and chemical warfare gas.
- bromomethane — methyl bromide.