| bonyness | (n) extreme leanness (usually caused by starvation or disease), Syn. gauntness, boniness, maceration, emaciation |
| bones | (n) a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance, Syn. castanets, finger cymbals, clappers |
| boneset | (n) perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine, Syn. Eupatorium perfoliatum, thoroughwort, agueweed |
| bonesetter | (n) someone (not necessarily a licensed physician) who sets broken bones |
| boneshaker | (n) any wheeled vehicle that is dilapidated and uncomfortable, Example: that old bike without rubber tires was a real boneshaker |