Word Study
contrayerva
CIDE DICTIONARY
contrayerva, n. [Sp. contrayerba, literally, a counter herb, hence, an antidote for poison, fr. l. contra + herba herb.].
A species of Dorstenia (Dorstenia Contrayerva ), a South American plant, the aromatic root of which is sometimes used in medicine as a gentle stimulant and tonic. [1913 Webster]
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