Date: Mon Nov 10 00:03:31 EST 1997
Subject: A.Word.A.Day--vomitorium

vo.mi.to.ri.um n. A passage or opening in an ancient amphitheatre or
theatre, leading to or from the seats. Usu. pl.

1754 Dictionary of Arts & Sciences. I. 129/2
"They were entered by avenues, at the end of which were gates,
called vomitoria."

also known as vomitory http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=vomitory