Leftover bits (6)
I believe the answer is:
scraps
'leftover bits' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for scraps that I've seen before include "43 [WASTE]" , "Discarded bits of food" , "Small fragments" , "Bits of food waste" , "Fragments left over (6)" .)