Supper for swine (4)
I believe the answer is:
slop
'supper for swine' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for slop that I've seen before include "overflow" , "Cause to spill over" , "Household liquid refuse" , "Spilled liquid" , "discarded > loose garment" .)