Plucked sound (5)
I believe the answer is:
twang
'plucked sound' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for twang that I've seen before include "Accent - sound of plucked string" , "accent's nasal sound" , "Nasal quality - strumming noise" , "Nasal tone or sound of plucked string" , "Pluck (a string)" .)