Pig fat (4)
I believe the answer is:
lard
'pig fat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lard that I've seen before include "Pork fat" , "Clarified pig fat" , "Aggrandise - embellish" , "Fat Scottish landowner appears disheartened" , "Animal fat" .)