vomitoriumn.

vomitorium (n.)1754, "passage or opening in an ancient amphitheater, leading to or from the seats," from Latin (Macrobius, Sat., VI.iv), from vomitare (see vomit (n.)) + -orium (see -ory). Meaning "place where ancient Romans (allegedly) deliberately vomited during feasts" is attested by 1876.