Rolling over, embarrassed oenophile's drunk port (6)
I believe the answer is:
odessa
'port' is the definition.
(Odessa is a Ukrainian port)
'rolling over embarrassed oenophile's drunk' is the wordplay.
'rolling over' shows that the letters should be reversed in order.
'drunk' says the answer is hidden in the clue (it was drunk by the letters so within them).
'assedo' is hidden in the letters of 'embarrassed oenophiles'.
'assedo' back-to-front is 'ODESSA'.
(Other definitions for odessa that I've seen before include "Ukrainian Black Sea port" , "Port city of Ukraine" , "Port city on the Black Sea" , "Ukrainian naval base" , "Battleship Potemkin mutiny port" .)