the dried rhizome and roots of either of two tropical American plants (Cephaelis acuminata and C. ipecacuanha) of the madder family used especially as a source of emetine; also : either of these plants
ipecac
noun(ip-e-cac)
an emetic and expectorant drug that contains emetine and is prepared from ipecac especially as a syrup for use in treating accidental poisoning