Plucked musical instrument (6)
I believe the answer is:
zither
'plucked musical instrument' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for zither that I've seen before include "music producer" , "Stringed box, played with plectrum" , "Stringed instrument laid flat to play" , "music player" , "Instrument played on table or lap" .)