It may be glossed over
I believe the answer is:
lip
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">it may be glossed over</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 lip that I've seen before include "Edge, rim" , "Part of mouth or cheek" , "Edge of mouth" , "Oral impudence?" , "Edge; impudent talk" .)