Give back small profits (7)
I believe the answer is:
returns
'profits' is the definition.
(I've seen this before)
'give back small' is the wordplay.
'give back' becomes 'return' ('return' can be a synonym of 'give back').
'small' becomes 's' (abbreviation - e.g. clothes size).
'return'+'s'='RETURNS'
(Other definitions for returns that I've seen before include "Tickets possibly available" , "Goods sent back" , "profit" , "Profits" , "Throws made by cricketers" .)