Domesticated pig (3)
I believe the answer is:
hog
'domesticated pig' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hog that I've seen before include "source of meat" , "A male pig or a greedy person" , "Domestic adult swine" , "Pig, who holds the road perhaps" , "Swine - keep for oneself" .)