I came across this word in an exhibition of ancient Persian artefacts at the National Museum in Seoul a year or two ago.

rhy·ton /ˈraɪtɒn/

–noun, plural -ta /-tə/
an ancient Greek drinking horn, made of pottery or metal, having a base in the form of the head of a woman or animal.

1840–50; < Gk rhytón, n. use of neut. of rhytós flowing, akin to rheîn to flow

Source: Dictionary.com.

A rhyton (plural rhytons or, following the Greek plural, rhyta) is a container from which fluids were intended to be drunk, or else poured in some ceremony such as libation. Rhytons were very common in ancient Persia, where they were called takuk (تکوک). The English word rhyton originates in the ancient Greek word ῥυτόν (rhŭtón).

After a Greek victory on Persia, much silver, gold, and other luxuries, including numerous rhytons, were brought to Athens. Persian rhytons, which appear in Athens suddenly in great quantities after the war, were immediately imitated by Greek artists.

Source: Wikipedia.