Otic secretion (6)
I believe the answer is:
earwax
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">otic secretion</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 earwax that I've seen before include "Otic deposit" , "Substance accumulating in the lugholes" , "Otic secretion" , "Hearing problem" , "Secretion in the lugholes" .)