Writer's moggy perhaps given nothing to eat (4)
I believe the answer is:
poet
'writer's' is the definition.
(poet is a kind of writer)
I cannot understand how the rest of the clue works.
(Other definitions for poet that I've seen before include "Heaney or Yeats, say" , "Writer in verse form" , "Bard" , "Bridges possibly" , "Minstrel" .)