Raging fire (7)
I believe the answer is:
inferno
'raging fire' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for inferno that I've seen before include "Hellish conflagration" , "Huge fire" , "Where Satan lives and sinners go" , "Intense and uncontrolled fire" , "Fierce fire" .)