Wordnet 3.0
NOUN (1)
1. 
 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: bones, castanets, clappers, finger cymbals]
WordNet (r) 3.0 (2006):
finger cymbals
    n 1: 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: bones,
         castanets, clappers, finger cymbals]