A vomitorium (plural: vomitoria, slang: vom) is a passage situated below or behind a tier of seats in an amphitheatre, through which crowds can exit at the end of a performance.
Despite their association with Ancient Rome, vomitoria are still found in some theatres, and many sports stadiums. The Oregon Shakespeare Festival, for instance, has vomitoria in two of its theatres, the outdoor Elizabethan Stage and the Angus Bowmer Theatre. The voms, as they are called, allow actors to mount the stage from halls cut into the amphitheatre. The Guthrie Theatre in Minneapolis, Minnesota has two pe...