Oblique allusion (8)
I believe the answer is:
innuendo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">oblique allusion</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 innuendo that I've seen before include "sneaky reference" , "Suggestive remark" , "End union with insinuation" , "Undone in unpleasant insinuation" , "hint" .)