Feature about one sound (5)
I believe the answer is:
noise
'sound' is the definition.
(a noise is a sound)
'feature about one' is the wordplay.
'feature' becomes 'nose' (a facial feature).
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'nose' going around 'i' is 'NOISE'.
(Other definitions for noise that I've seen before include "Public talk" , "Uproar" , "Sound of any kind" , "Sound - gossip" , "Excessive sound" .)