Feel hot; stream (4)
I believe the answer is:
burn
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">feel hot</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(eg a body part might burn or feel hot)</span><br/ ><br/ >'<span class="explanation-format__original">stream</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(a burn is a small stream)</span><br/ ><br/ ></span>
(Other definitions for burn that I've seen before include "Combust" , "Smart" , "Scorch - stream" , "Feel hot, small stream" , "Cremate" .)