Roman god of wine (7)
I believe the answer is:
bacchus
'roman god of wine' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bacchus that I've seen before include "Greek god of boozing" , "Greek god of wine, also called Dionysus" , "Another name for Dionysus, Greek god of drink" , "Roman god of wine and revelry" , "Greek god of drink, also called Dionysus" .)