Came back (8)
I believe the answer is:
'came back' is the definition.
('return' can be a synonym of 'come back')
This is the entire clue.
(Other definitions for returned that I've seen before include "Honoured by the electorate" , "Went, came or gave back" , "Sent back" , "dishonoured by the bank" , "Went, came or brought back" .)