Container for wine? (4)
'wine?' is the definition.
(sack is a kind of wine)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for sack that I've seen before include "Discharge" , "present holder" , "Container for coal etc" , "Wine; fire; bag" , "Plundering by a mob" .)
(Other definitions for carafe that I've seen before include "Wide-necked bottle for water or wine" , "Serving vessel for water or wine" , "keeper of wine" , "Table container for wine" , "Source of wine" .)