Hog haven (3)
I believe the answer is:
sty
'hog haven' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sty that I've seen before include "Eye ailment or pig's home" , "Pig-pen and infection on the eyelid" , "Pigpen; swelling" , "Pig pen" , "Piggery" .)