A large, ceramic storage vessel frequently set upon the earth and therefore possessing no flat base. It usually has a lid, and was often used for storing a large quantity of grain or oil, or for a human burial. The plural form of this Greek term is pithoi. (pr. pith'aws) Among the other types of Greek vases are the alabastron, amphora, hydria, kantharos, krater, kyathos, kylix, lekythos, oinochoe, pelike, phiale, pinax, pyxis, and rhyton.