Of the mind (6)
I believe the answer is:
mental
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">of the mind</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 mental that I've seen before include "Involving the mind" , "Lament (anag) - of the mind" , "off trolley" , "Intellectual" , "Light allowing vehicles to turn while ahead is red" .)