Porcine utterance (4)
I believe the answer is:
oink
'porcine utterance' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oink that I've seen before include "Piggish noise" , "Animal sound" , "Beastly sound" , "Noise a pig makes" , "Sow's sound" .)