The Collaborative International Dictionary of English v.0.48:
Chinchona \Chin*cho"na\, Chincona \Chin*co"na\ any of several trees of the genus Cinchona. Same as Cinchona. [1913 Webster]WordNet (r) 3.0 (2006):
chinchona n 1: any of several trees of the genus Cinchona [syn: cinchona, chinchona]