Author Greene (6)
I believe the answer is:
graham
'author greene' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for graham that I've seen before include "--- Hill, 60s motor-racing champion" , "Martha -, choreographer; A. - Bell, inventor" , "- Greene, Br. author" , "Man's name" , "Novelist, who wrote..." .)