Collect discarded food (8)
I believe the answer is:
scavenge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">collect discarded food</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scavenge that I've seen before include "Feed on carrion or refuse" , "Search for scraps" , "Search among discarded material for something to re-use" , "pick up what's discarded" , "Collect anything usable from discarded waste" .)