/ kwɪˈniːn; NAmE ; ˈkwɪniːn; NAmE also ˈkwaɪnaɪn/ noun
[ U ] a drug made from the bark of a S American tree, used in the past to treat malaria
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WORD ORIGIN
early 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.