Gentle reminder (5)
I believe the answer is:
nudge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gentle reminder</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 nudge that I've seen before include "---. ---, wink, wink (Monty Python)" , "Shove" , "A gentle reminder?" , "Jostle" , "Remind, prompt gently" .)