Diamonds (3)
I believe the answer is:
ice
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">diamonds</span>' is the definition.<br/ ><span class="explanation-format__explanation">(slang term for diamonds)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ice that I've seen before include "Formality" , "Diamonds (sl)" , "Glaze" , "To put in a drink or slide on" , "Solid H2O" .)