Assimilate food
I believe the answer is:
digest
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">assimilate food</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for digest that I've seen before include "Take in - collected rules of laws" , "Break down (food)" , "Synopsis" , "Periodical that summarizes the news" , "Assimilate - summary" .)