vom·it / ˈvämət/ • v. (-it·ed , -it·ing ) [intr.] eject matter from the stomach through the mouth: the sickly stench made him want to vomit | [tr.] she used to vomit up her food. ∎  [tr.] emit (something) in an uncontrolled stream or flow: the machine vomited fold after fold of paper.• n. 1. matter vomited from the stomach. 2. archaic an emetic.DERIVATIVES: vom·it·er n.

vomit (vom-it)
1. vb. to eject the contents of the stomach through the mouth (see vomiting).

2. n. the contents of the stomach ejected during vomiting. Medical name: vomitus.

vomit sb. XIV. — OF. vomite or L. vomitus, f. vomere vomit, rel. to Skr. vámiti, Gr. emeîn.
So vomit vb. spew. XIV. f. vomit-, pp. stem of L. vomere or — L. frequent. vomitāre.