Small bit of food (6)
I believe the answer is:
morsel
'small bit of food' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for morsel that I've seen before include "Crumb" , "Tasty little piece" , "A scrap or shred of food" , "a little food" , "Scrap, fragment" .)