Ancient jar for wine or oil (7)
I believe the answer is:
amphora
'ancient jar for wine or oil' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for amphora that I've seen before include "Tall narrow-necked Greek or Roman jar" , "piece of classical pottery" , "jar from Greece" , "Ancient Greek or Roman jar with two handles" , "Classical jar for storing liquids" .)