Morsels (4)
'morsels' is the definition.
(crumb is a kind of morsel)
This is all the clue.
(Other definitions for crumbs that I've seen before include "that surprises me!" , "Blimey!" , "Morsels of bread" , "Very little to eat -- goodness gracious me!" , "Schoolboy expression (of comfort?)" .)
'morsels' is the definition.
('bit' can be a synonym of 'morsel')
This is the entire clue.
(Other definitions for bits that I've seen before include "Small pieces" , "Parts" , "Small units of digital memory" , "Pieces, fragments" .)