JM Barrie character (5,3)
I believe the answer is:
peter pan
'jm barrie character' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for peter pan that I've seen before include "Ever-youthful boy" , "immature man" , "J M Barrie's boy who never grew up" , "JM Barrie hero" , "Musical from Barrie play" .)