Roman Antiq. Pl. vomitoria (also 8 -iums, erron. -iæ). [Neuter sing. of L. vomitōrius (cf. next); recorded only in pl. (Macrobius, Sat., VI. iv.).] A passage or opening in an ancient amphitheater or theater, leading to or from the seats. Usu. pl.

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1754.  Dict. Arts & Sci., I. 129/2. They were entered by avenues, at the end of which were gates, called vomitoriæ.

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1766.  Smollett, Trav., II. 228. The remains of two galleries one over another; and two vomitoria or great gateways at opposite sides of the arena.

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1837.  Antiq. Athens, 48. Those numerous corridors and vomitoria which gave such free … access to all parts of a Roman theatre.

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