quinine
noun /ˈkwɪniːn/
/ˈkwaɪnaɪn/
[uncountable]- a drug made from the bark of a South American tree, used in the past to treat malariaWord Originearly 19th cent.: from Spanish quina ‘cinchona bark’ (from Quechua kina ‘bark’) + -ine. Cinchona is an evergreen South American tree or shrub, whose bark is the source of quinine.