Vomitorium

A vomitorium is a passage situated below or behind a tier of seats in an amphitheatre or a stadium through which large crowds can exit rapidly at the end of an event.

[1] The Latin word vomitorium, plural vomitoria, derives from the verb vomō, vomere, "to spew forth".

The Chichester Festival Theatre, founded in 1962, was the first of its kind to be opened in the United Kingdom for 500 years, because there is no proscenium arch or wings.

[4] In addition, the Mark Taper Forum, one of the three theatres making up the Los Angeles Music Center, has two vomitoria.

A commonly held but erroneous notion is that Ancient Romans designated spaces called vomitoria for the purpose of literal vomiting, as part of a binge-and-purge cycle.