Webster's Revised Unabridged Dictionary · 1913

Emetic

Emetic , adjective

[Latin emeticus, Greek {not transcribed}, from {not transcribed} to vomit, akin to Latin vomere: compare French émétique. See Vomit.]

(Medicine) Inducing to vomit; exciting the stomach to discharge its contents by the mouth.
(Medicine) A medicine which causes vomiting.