Guitar pick (8)
I believe the answer is:
plectrum
'guitar pick' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for plectrum that I've seen before include "It's used to pluck, a guitar say" , "One for plucking guitar" , "Object used to pluck stringed instrument" , "Device for playing guitar" , "Guitar pick" .)