Morsels of bread (6)
I believe the answer is:
crumbs
'morsels of bread' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crumbs that I've seen before include "Exclamation of surprise" , "Morsels of bread" , "Very little to eat -- goodness gracious me!" , "not much of a bloomer!" , "Crikey, cripes" .)