Stash or conceal (7)
I believe the answer is:
secrete
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">stash</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">conceal</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that secrete is a type of conceal)</span><br/ ><br/ ></span>
(Other definitions for secrete that I've seen before include "Hide - discharge" , "Hide or conceal an object" , "Form substance for use within body, as liver does bile" , "Release bodily fluid" , "harbour" .)