Provided part for Roman poet (4)
I believe the answer is:
'roman poet' is the definition.
(I've seen this in another clue)
'provided part' is the wordplay.
'part' indicates a hidden word.
'OVID' can be found hidden inside 'provided'.
'for' acts as a link.
(Other definitions for ovid that I've seen before include "Roman poet N void (anag)" , "Void for old Roman poet" , "Old linesman" , "Roman love poet" , "Void for a Latin poet" .)