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1710, borrowing via Portuguese of a shortened form of Tupi ipecacuana (a word attested in English from 1682), a medicinal plant of Brazil. The Indian word is said to mean "small plant causing vomit."
ipecac ip·e·cac (ĭp'ĭ-kāk')
A preparation that is made from the dried roots and rhizomes of the shrub Cephaelis ipecacuanha that is used to induce vomiting.