Answer:
This is a riddle from ancient Anglo Saxon poetry alluding to one of those ancient Greek or Roman style containers, sort of a pottery jar, with 2 handles and a narrow neck called Amphoras aka Wine Jars; they were used to store and carry liquid and spirit beverages such as wine, thus the mouth and wide belly, and it used to both be transported on ships in large lots and be present in gatherings.
Explanation:
