"Raging Bull" director (8)
I believe the answer is:
scorsese
'raging bull director' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for scorsese that I've seen before include "Hit (by an idea)" , "Martin ___, director of Goodfellas and Raging Bull" , "Martin . . . . . . . ., film-maker" , "Martin -, US film director (Taxi Driver)" .)