Perceive by touch (4)
I believe the answer is:
feel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">perceive by touch</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 feel that I've seen before include "Fondle" , "16A [JUDGE]" , "Be aware of - texture" , "impression" , "Have sensation of" .)