Tin jug (3)
I believe the answer is:
can
I believe this clue is a double definition.
'tin' is the first definition.
(I know that tin can be written as can)
'jug' is the second definition.
(both are containers)
(Other definitions for can that I've seen before include "Tin; be able to" , "John" , "Is able; container" , "SECOND PART OF 10" , "Billy" .)