Relating to the ear (4)
I believe the answer is:
otic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">relating to the ear</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for otic that I've seen before include "Relating to ears" , "of lugs" , "Listener's" , "Relating to the ear" , "relating to area incorporating canal" .)