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1. (used in the plural) 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
   - castanets, clappers, finger cymbals

1. Rigid connective tissue that makes up the skeleton of vertebrates
   - os[2]
    
2. The porous calcified substance from which bones are made
   - osseous tissue
    
3. A shade of white the colour of bleached bones
   - ivory, pearl, off-white

1. [informal] Study intensively, as before an exam
   "I had to bone up on my Latin verbs before the final exam";
   - cram [informal], grind away, bone up [informal], swot [Brit, informal], get up [informal], mug up [Brit, informal], swot up [Brit, informal], revise [Brit]
    
2. Remove the bones from
   "bone the turkey before roasting it";
   - debone
    
3. [vulgar] (of a man) have sexual intercourse with

Type of: animal material, connective tissue, hit the books, percussion instrument, percussive instrument, remove, study, take, take away, white, whiteness, withdraw

Part of: endoskeleton, horn

Encyclopedia: Bones, Robert