Cash in (6)
I believe the answer is:
redeem
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cash in</span>' is the definition.<br/ ><span class="explanation-format__explanation">(redeeming is a kind of cashing in)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for redeem that I've seen before include "Buy back; absolve" , "Make good" , "Cash in shares, bonds etc" , "Get back" , "Recover from the pawnshop" .)