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bottommost lowest; furthest down.
botulin a toxin produced by the bacteria botulinus, and which causes botulism.
botulinum a spore-forming bacterium (Clostridium botulinum) that produces botulin toxin under anaerobic conditions.
botulism an often lethal disease of the nervous system caused by ingesting even small amounts of the toxin botulin, produced by a bacterium that grows in poorly preserved or spoiled foods.
boudoir a woman's private sitting room or bedroom.
bouffant full and puffed out. [2 definitions]
bougainvillea any of several woody vines of the American tropics that have small inconspicuous flowers surrounded by bright red, orange, or purple bracts.
bough a branch of a tree, esp. a main branch.
bought past tense and past participle of buy.
bouillabaisse a stew containing a variety of fish and shellfish, often cooked with saffron.
bouillon a thin, usu. clear broth, or the stock for making such a broth.
boulangerie (French) a bakery that specializes in bread, rolls, and other plain baked goods.
boulder a large detached rock.
boule1 an advisory council of elders or legislative assembly in ancient Greece. [2 definitions]
boule2 a cylindrical or pear-shaped ball of alumina, fused and tinted to produce a synthetic gem. [2 definitions]
boulevard a wide city street, often lined with trees or landscaped.
bounce to spring back or up following a collision, or to do so several times in succession. [10 definitions]
bounce back to recover completely or quickly.
bouncer something or someone that bounces. [2 definitions]
bouncing full of life; healthy; vigorous.
bouncing Bet a perennial plant originating in Europe and Asia that has rounded clusters of pinkish flowers.