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