plec·trum
noun/ˈplektrəm/
/ˈplektrəm/
(plural plectrums, plectra
/ˈplektrə/
/ˈplektrə/
)(also informal pick)
- a small piece of metal, plastic, etc. used for plucking the strings of a guitar or similar instrument
（弹拨琴弦用的）琴拨，拨子 Oxford Collocations DictionaryPlectrum is used after these nouns:- guitar
Word Originlate Middle English: via Latin from Greek plēktron ‘something with which to strike’, from plēssein ‘to strike’.