"Ars Amatoria” poet (4)
I believe the answer is:
'ars amatoria poet' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ovid that I've seen before include "Old linesman" , "Void for a Latin poet" , "Roman known for his love poetry" , "Classical poet" , "Roman poet N void (anag)" .)