Wikipedia
Kottabos was a game of skill played at ancient Greek and Etruscan symposia (drinking parties), especially in the 5th and 4th centuries BC. The game is played by flinging wine lees at targets. The player would utter the name of the object of his affection.
The game appears to have been of Sicilian origin, but it spread through Greece from Thessaly to Rhodes, and was especially fashionable at Athens. Writers including Dionysius Chalcus, Alcaeus, Anacreon, Pindar, Bacchylides, Aeschylus, Sophocles, Euripides, Aristophanes, and Antiphanes make frequent and familiar allusion to the practice, and it appears on vases from the era. References to the practice by the writers of the Roman and Alexandrian periods show that the fashion had died out. In Latin literature it is almost entirely unknown.
Usage examples of "kottabos".
Pindaros suggested they play kottabos, and I, not knowing how it was played, stood under the lintel for a time to watch.