Auditory organ (3)
I believe the answer is:
ear
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">auditory organ</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ear that I've seen before include "Hammer in this" , "Aural organ" , "Lughole" , "Van Gogh missing body part" , "Listener in the cornfield" .)