The dried leaves of Erythroxylon c., yielding not less than 0.5% of ether-soluble alkaloids; the source of cocaine and several other alkaloids. [S. Am.]
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co·ca 'kō-kə n
1) any of several So. American shrubs (genus Erythroxylon of the family Erythroxylaceae) esp one (E. coca) that is the primary source of cocaine
2) dried leaves of a coca (as Erythroxylon coca) containing alkaloids including cocaine
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co·ca (koґkə) 1. Erythroxylon coca. 2. the leaves of E. coca, widely used in parts of South America as a euphoriant masticatory. A central nervous system stimulant, it was once widely used medicinally and is a source of the crystalline extract cocaine.Medical dictionary. 2011.