vom•i•to•ry (ˈvɒm ɪˌtɔr i, -ˌtoʊr i) adj.,n.,pl.-ries.adj. 1.inducing vomiting; emetic. 2.of or pertaining to vomiting. n. 3.an opening through which something is ejected or discharged. 4.an opening, as in an ancient Roman theater or stadium, permi...