Get back from uncle's, perhaps (6)
I believe the answer is:
redeem
'get back' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for redeem that I've seen before include "Get back" , "Make good" , "Make amends (for)" , "take back pawn move" , "Buy back from the pawn shop" .)