Writer Bellow (4)
I believe the answer is:
saul
'writer bellow' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for saul that I've seen before include "Paul, pre-conversion" , "Oratorio by Handel" , "Old King" , "-- Bellow, Nobel-winning author" , "St Paul's name when he started on the road to Damascus" .)