Wordnet 3.0
NOUN (1)
1. 
 a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument; 
[syn: pick, plectrum, plectron]
WordNet (r) 3.0 (2006):
plectron
    n 1: a small thin device (of metal or plastic or ivory) used to
         pluck a stringed instrument [syn: pick, plectrum,
         plectron]