n. pl. hy·dri·ae (-drē-ē′) or hy·dri·as
A large three-handled water jar used by the ancient Greeks, with two handles used for lifting and the third for pouring.
[Greek hudriā, from hudōr, water; see wed- in the Appendix of Indo-European roots.]
(click for a larger image)hydria
4th-century bc Greek hydria
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