Critic raging about rock (4)
I believe the answer is:
crag
'rock' is the definition.
(I've seen this before)
'critic raging about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'CRAG' is hidden in the letters of 'critic raging'.
(Other definitions for crag that I've seen before include "Steep, rugged peak" , "Rough, steep rock face" , "Rugged rock face" , "Rocky hilltop" , "Steep rock, peak" .)