Sonnet writer (4)
I believe the answer is:
poet
'sonnet writer' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for poet that I've seen before include "One writing verse" , "Maker of verses" , "'Paul Muldoon or Paula Meehan, say (4)'" , "Pound, say" , "Tope with a versifier" .)