QUININE
quinine
(noun) a bitter alkaloid extracted from chinchona bark; used in malaria therapy
Source: WordNet® 3.1
Etymology
Noun
quinine (countable and uncountable, plural quinines)
(pharmaceutical drug) A bitter colourless powder, an alkaloid derived from cinchona bark, used to treat malaria and as an ingredient of tonic water.
Source: Wiktionary
Qui"nine, n. Etym: [F. (cf. Sp. quinina), fr. Sp. quina, or
quinaquina, Peruvian bark, fr. Peruv. kina, quina, bark. Cf. Kinic.]
(Chem.)
Definition: An alkaloid extracted from the bark of several species of
cinchona (esp. Cinchona Calisaya) as a bitter white crystalline
substance, C20H24N2O2. Hence, by extension (Med.), any of the salts
of this alkaloid, as the acetate, chloride, sulphate, etc., employed
as a febrifuge or antiperiodic. Called also quinia, quinina, etc.
[Written also chinine.]
Source: Webster’s Unabridged Dictionary 1913 Edition