| Noun | 1. | cinchona - medicinal bark of cinchona trees; source of quinine and quinidinebark - tough protective covering of the woody stems and roots of trees and other woody plants |
| 2. | cinchona - any of several trees of the genus Cinchonagenus Chinchona, genus Cinchona - large genus of trees of Andean region of South America having medicinal bark Cartagena bark, Cinchona cordifolia, Cinchona lancifolia - Colombian tree; source of Cartagena bark (a cinchona bark) calisaya, Cinchona calisaya, Cinchona ledgeriana, Cinchona officinalis - Peruvian shrub or small tree having large glossy leaves and cymes of fragrant yellow to green or red flowers; cultivated for its medicinal bark Cinchona pubescens, cinchona tree - small tree of Ecuador and Peru having very large glossy leaves and large panicles of fragrant pink flowers; cultivated for its medicinal bark cinchona, cinchona bark, Jesuit's bark, Peruvian bark - medicinal bark of cinchona trees; source of quinine and quinidine tree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms |