As a proper noun cinchona
As a noun cinchonine is
(organic compound) an alkaloid, obtained from the bark of cinchona trees, that is used as an antimalarial agent.
* chinchona, chincona
Any of several South American trees, of the genus Cinchona , cultivated for its medicinal bark.
* 2001': German chemists were the first to isolate pure drug chemicals from herbal medicines, with the isolation of morphine from crude opium in 1803 and quinine from the bark of the '''cinchona tree in 1820. — Leslie Iversen, ''Drugs: A Very Short Introduction (Oxford 2001, p. 8)
The bark of these trees, that yields quinine alkaloids used to treat malaria.
(organic compound) An alkaloid, obtained from the bark of cinchona trees, that is used as an antimalarial agent.