High Quality Content by WIKIPEDIA articles! A vomitorium is a passage situated below or behind a tier of seats in an amphitheatre, through which big crowds can exit rapidly at the end of a performance. The Latin word vomitorium, plural vomitoria, derives from the verb vomeo, vomere, vomitum, "to spew forth." In ancient Roman architecture, vomitoria were designed to provide rapid egress for large crowds at amphitheatres and stadiums, as they do in modern sports stadiums and large theaters.