The kind of meal that's fragmentary (5)
I believe the answer is:
piece
'the kind of meal' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'that's fragmentary' is the wordplay.
I cannot quite understand how this works, but
'that's' could be 'ie' and 'ie' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for piece that I've seen before include "one of eight once ready for the Spanish?" , "bishop on board, say" , "Chessman; portion" , "E.g. bishop" , "See 3" .)