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