Hairy Bikers hewed rocks (11)
I believe the answer is:
bewhiskered
'hairy' is the definition.
(thesaurus)
'bikers hewed rocks' is the wordplay.
'rocks' indicates anagramming the letters.
'bikers'+'hewed'='bikershewed'
'bikershewed' is an anagram of 'BEWHISKERED'.
(Other definitions for bewhiskered that I've seen before include "Unshaven" , "Bristly" , "with mutton chops?" .)