Excess body fat (4)
I believe the answer is:
flab
'excess body fat' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for flab that I've seen before include "Sign of over-indulgence" , "Excess body fat" , "Loose flesh; fat" , "Informally, unsightly fat" , "Fat acquired by over-eating" .)