One of the senses (7)
I believe the answer is:
hearing
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one of the senses</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 hearing that I've seen before include "Audition - trial" , "Sense of sound" , "Judicial process" , "Trial; sense" , "Perceiving sound" .)