A bit for each (6)
I believe the answer is:
apiece
'each' is the definition.
(synonyms)
'a bit' is the wordplay.
'bit' becomes 'piece' (synonyms).
'a'+'piece'='APIECE'
'for' acts as a link.
(Other definitions for apiece that I've seen before include "for everyone" , "For or by each one of group" , "Per person" , "A head" .)