Vent, aperture (7)
I believe the answer is:
orifice
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">vent</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">aperture</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for orifice that I've seen before include "Finding opening" , "Hole in the head, perhaps?" , "Bodily opening, mouth of cavity" , "provided by gold and diamonds" , "8 [OPENING]" .)