Poet, second Graves, maybe, eclipsing Smart (9)
I believe the answer is:
swinburne
'poet' is the definition.
(19th-century poet Algernon Charles Swinburne)
'second graves maybe eclipsing smart' is the wordplay.
'second' becomes 's' (common abbreviation).
'graves maybe' becomes 'wine' (Graves is a type of wine).
'eclipsing' indicates putting letters inside (eclipse can mean to cover up or hide).
'smart' becomes 'burn' (burning is a kind of smarting).
'wine' enclosing 'burn' is 'winburne'.
's'+'winburne'='SWINBURNE'
(Other definitions for swinburne that I've seen before include "Rub in news (anag) - poet" , "Algernon --, English poet" , "Victorian poet" .)