Leftover, remaining (8)
I believe the answer is:
residual
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">leftover</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">remaining</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that remaining can be written as residual)</span><br/ ><br/ ></span>
(Other definitions for residual that I've seen before include "Leftover - used rail (anag)" , "'Remaining, left over (8)'" , "Remaining at the end" , "Leftover; repeat royalty" , "Remaining; repeat royalty" .)