Shakespearean forest (5)
I believe the answer is:
arden
'shakespearean forest' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for arden that I've seen before include "John --, playwright" , "Wood in play" , "Shakespearean forest" , "The forest of --, setting for As You Like It" , "Wooded region of Warwickshire" .)