Drink before dinner (8)
I believe the answer is:
aperitif
'drink before dinner' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aperitif that I've seen before include "An alcoholic drink before dinner, an appetiser" , "Appetising drink" , "Appetite stimulant drink" , "Alcoholic drink taken before meal" , "Drink stimulating the appetite" .)