出典:Wiktionary
From New Latin cinchona, from Spanish Chinchón. Named by Carl Linnaeus after Ana de Osorio, 4th Countess of Chinchón (1599–1625), the wife of the Spanish Viceroy of Peru, who was allegedly cured of a fever by the bark.
cinchona (countable かつ uncountable, 複数形 cinchonas)