Money we raised for nut (6)
I believe the answer is:
cashew
'for nut' is the definition.
(cashew is a kind of nut)
'money we raised' is the wordplay.
'money' becomes 'cash' (cash is a type of money).
'raised' is a reversal indicator (going up in a down clue).
'we' back-to-front is 'ew'.
'cash'+'ew'='CASHEW'
(Other definitions for cashew that I've seen before include "Acajou" , "Kidney shaped nut" , "Chew as you would this nut" , "Kidney-shaped nut of tropical tree" , "Common type of nut" .)