Spread for pig (3)
I believe the answer is:
sow
I believe this clue is a double definition.
'spread' is the first definition.
(sowing is a kind of spreading)
'pig' is the second definition.
(thesaurus)
'for' is the link.
(Other definitions for sow that I've seen before include "One who takes care of litter" , "Scatter seed; pig" , "Plant seed in soil" , "She lives in 11" , "Plant seeds for the pig" .)