Secrete (4)
I believe the answer is:
hide
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">secrete</span>' is the definition.<br/ ><span class="explanation-format__explanation">(secrete can mean to hide away)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hide that I've seen before include "Place to observe wildlife" , "Mammal's tough skin" , "Keep secret, skin" , "Bury" , "Keep under wraps" .)