Play for which actor given licence (6)
I believe the answer is:
hamlet
'play' is the definition.
(play by William Shakespeare)
'actor given licence' is the wordplay.
'actor' becomes 'ham' (ham actor is a kind of actor).
'given licence' becomes 'let' (to give licence is to let someone do something).
'ham'+'let'='HAMLET'
'for which' is the link.
(Other definitions for hamlet that I've seen before include "Shakespearean play" , "Tragic figure" , "Small village of a Danish prince" , "whose forefathers were rude, did Gray imply?" , "Village for Shakespearean prince" .)