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brute any nonhuman animal, esp. a mammal. [5 definitions]
brutish being unfeeling, brutal, very stupid, or the like; savage.
bruxism the unconscious habit of grinding one's teeth, either while sleeping or waking.
bryology the branch of botany dealing with mosses and liverworts.
bryony any of several perennial vines of the gourd family, having fleshy roots and bearing greenish flowers, the juice of which has been used to cause vomiting and bowel movement.
bryophyte any of the group of plants that consists of the true mosses, peat mosses, hornworts, and liverworts.
Brythonic of or belonging to the P-Celtic group of languages. [2 definitions]
B.S.1 abbreviation of "Bachelor of Science," an undergraduate degree conferred on a person who has completed a curriculum in science, technology, or the like.
B.S.2 (often l.c.) (vulgar slang) abbreviation of "bullshit," lies, exaggerations, boasts, or the like.
Btu abbreviation of "British thermal unit" or "British thermal units," a unit of heat equal to the amount needed to raise the temperature of one pound of water one degree Fahrenheit, or equal to about 252 calories.
bu. abbreviation of "bushel" or "bushels."
bubble an approximately spherical volume of gas bounded by a liquid or a solid. [7 definitions]
bubble bath a bath with an added liquid, crystal, or powder preparation that creates thick suds and perfumes and softens the water. [2 definitions]
bubble gum chewing gum that can be blown into large bubbles.
bubble memory a solid-state computer device that stores information, coded into binary digits, in microscopic magnetized areas in sheets, as of garnet.
bubble over to show great cheer and liveliness.
bubbly full of or giving off bubbles. [2 definitions]
bubo a swollen, inflamed lymph gland, esp. in the groin or armpit.
bubonic plague an epidemic disease caused by bacteria transmitted from rats to humans by fleas, spread by contagion and characterized by chills, fever, swollen glands, and weakness.
buccal of or pertaining to the mouth or cheeks.
buccaneer one who illegally attacks ships at sea or areas along the coast; pirate.