"Wait, there's more …" (3)
I believe the answer is:
and
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wait there's more</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 and that I've seen before include "Joining word" , "In addition" , "See 20" , "Plus" , "it needs wholly positive input for positive result" .)