vomitoriumPronunciation: /ˌvɒmɪˈtɔːrɪəm/Definition of vomitorium noun (plural vomitoria /-rɪə/) 1each of a series of entrance or exit passages in an ancient Roman amphitheatre or theatre. 2a place in which, according to popular misconception, the ancient Romans are supposed to have vomited during feasts to make room for more food. Origin:Latinvomitorium in other Oxford dictionaries Definition of vomitorium in the US English dictionary