Greek wine (7)
I believe the answer is:
retsina
'greek wine' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for retsina that I've seen before include "Greek resin-flavoured wine" , "Greek white wine flavoured with resin" , "Greek drink" , "Oily-tasting Greek white wine" , "S European wine" .)