Organ of hearing (3)
I believe the answer is:
ear
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">organ of hearing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ear that I've seen before include "Listening organ" , "Part of a cereal plant containing the seeds" , "Appreciation of sounds" , "It's used in hearing" , "Discernment musicians need" .)