Pig or hog (5)
I believe the answer is:
swine
I believe this is a double definition.
'pig' is the first definition.
(I know this)
'hog' is the second definition.
(I know that hog can be written as swine)
(Other definitions for swine that I've seen before include "See 9" , "Contemptible person; pigs" , "Pig, pigs" , "Archaic pigs, Gadarene in Bible" , "Nasty people" .)