Evil look (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">evil look</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for leer that I've seen before include "Look lecherously" , "Stare suggestively" , "Lecherous look" , "Look lasciviously at" , "Gaze lasciviously at" .)