Some repast eaten little by little (9)
I believe the answer is:
piecemeal
'little by little?' is the definition.
('piecemeal' can be a synonym of 'little by little')
'some repast' is the wordplay.
'some' becomes 'piece' (I can't justify this - if you can you should give a lot more credence to this answer).
'repast' becomes 'meal' (synonyms).
'piece'+'meal'='PIECEMEAL'
'eaten' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for piecemeal that I've seen before include "A bit at a time" , "a little at a time" , "Bit by bit; unsystematic" , "Gradually, little by little" , "Unsystematically" .)