"Rocky” star (8)
I believe the answer is:
stallone
'rocky star' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stallone that I've seen before include "Sylvester ..., cinema's Rocky" , "See 6" , "Sylvester -, US actor" , "Sylvester ........, Hollywood tough guy" , "Sylvester - (Rambo)" .)