Playwright George Bernard __ (4)
I believe the answer is:
shaw
'playwright george bernard' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for shaw that I've seen before include "George Bernard -, Irish dramatist" , "Irish author" , "G. B. ---; T. E. ---" , "making an appearance in Craiglockhart?" , "Pygmalion playwright" .)