Chicken sounds disgusting (4)
I believe the answer is:
fowl
'chicken' is the definition.
(chicken is a type of fowl)
'sounds disgusting' is the wordplay.
'sounds' indicates a 'sounds like' (homophone) clue.
'disgusting' becomes 'foul' (both can mean horrible).
'foul' is a homophone of 'FOWL'.
(Other definitions for fowl that I've seen before include "Cock or hen" , "Bird, maybe domestic" , "eg Chicken" , "Domesticated bird" , "Any farmyard bird" .)