"cinchonas" in the noun sense
1. cinchona, cinchona bark, Peruvian bark, Jesuit's bark
medicinal bark of cinchona trees source of quinine and quinidine
2. cinchona, chinchona
any of several trees of the genus Cinchona
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License