An alkaloid, first found in white cinchona bark.
One of the quinine group of alkaloids, found especially in red cinchona bark
specifically, designating a nonnitrogenous acid obtained from cinchona bark, coffee, beans, etc., as a white crystalline substance.
A brownish resinous substance obtained as a by-product in the treatment of cinchona bark
red cinchona bark
[医] 红金鸡纳皮
