Vomit, v. i. [imp. & p. p. Vomited; p. pr. & vb. n. Vomiting.]
Etymology: [Cf. L. vomere, vomitum, and v. freq. vomitare. See Vomit, n.]
To eject the contents of the stomach by the mouth; to puke; to spew.
2 other Webster entries under this spelling
Vomit, v. t.
1. To throw up; to eject from the stomach through the mouth; to disgorge; to puke; to spew out; -- often followed by up or out. The fish . . . vomited out Jonah upon the dry land. Jonah ii. 10.
2. Hence, to eject from any hollow place; to belch forth; to emit; to throw forth; as, volcanoes vomit flame, stones, etc. Like the sons of Vulcan, vomit smoke. Milton.
Vomit, n.
1. Matter that is vomited; esp., matter ejected from the stomach through the mouth. Like vomit from his yawning entrails poured. Sandys.
2. (Med.)
That which excites vomiting; an emetic. He gives your Hollander a vomit. Shak. Black vomit. (Med.) See in the Vocabulary. -- Vomit nut, nux vomica.
Shades of meaning
Fernald lists vomit only as an antonym, under absorb.
He lists it without comment; the entries above explain its neighbors.