Noise of a plucked string (5)
I believe the answer is:
twang
'noise of a plucked string' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for twang that I've seen before include "Plucking sound - nasal tone" , "Nasal quality - strumming noise" , "heard when listening to The Archers?" , "The Sound of Music?" , "Noise made by a plucked string" .)