"Peter Pan” writer (6)
I believe the answer is:
barrie
'peter pan writer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for barrie that I've seen before include "Scottish playwright" , "J M ...... created Peter Pan" , "J. M. -, Peter Pan creator" , "J. M. -, Peter Pan author" , "Children's writer" .)