vom·i·to·ry /ˈvɑməˌtori, ˌtɔr-/
  (a.)嘔吐的,使嘔吐的催吐劑,大門
  vom·i·to·ry /ˈvɑməˌtorɪ, ˌtɔr-/ 形容詞
  催吐劑,使嘔吐的
  Vom·i·to·ry a.  Causing vomiting; emetic; vomitive.
  Vom·i·to·ry, n.; pl. Vomitories
  1. An emetic; a vomit.
  2.  Arch. A principal door of a large ancient building, as of an amphitheater.
     Sixty-four vomitories . . . poured forth the immense multitude.   --Gibbon.
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  vomitory
       n : an entrance to an amphitheater or stadium