Nasal openings (8)
I believe the answer is:
nostrils
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nasal openings</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nostrils that I've seen before include "Nose holes" , "Openings in nasal cavities" , "Openings in the nose" , "Nose-openings" , "Narial openings" .)