Hockey great Gretzky (5)
I believe the answer is:
wayne
'hockey great gretzky' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for wayne that I've seen before include "John ....., later hero of western films" , "See seventeen accross" , "- - 's World (film)" , "John --, film star" , "John --, US film actor" .)