Very warm (3)
I believe the answer is:
hot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">very warm</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 hot that I've seen before include "Fiery" , "Torrid" , "SECOND PART OF 11" , "Very popular" , "Flaming - spicy" .)