Money we returned for a little food (6)
I believe the answer is:
cashew
'a little food' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'money we returned' is the wordplay.
'money' becomes 'cash' (cash is a type of money).
'returned' says the letters should be written backwards.
'we' backwards is 'ew'.
'cash'+'ew'='CASHEW'
'for' is the link.
Can you help me to learn more?
(Other definitions for cashew that I've seen before include "Common type of nut" , "Acajou" , "snack perhaps" , "Kidney shaped nut" , "Kidney-shaped nut of tropical tree" .)