Feed or foster (7)
I believe the answer is:
nourish
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">feed</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that nourish is a type of feed)</span><br/ ><br/ >'<span class="explanation-format__original">foster</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for nourish that I've seen before include "Nurture, sustain" , "Feed, sustain" , "Keep alive and well with food" , "encourage growth" , "Supply with food, keep well" .)