Senna

The leaves of several leguminous plants of the genus Cassia. (C. acutifolia, C. angustifolia, etc.). They constitute a valuable but nauseous cathartic medicine.

The plants themselves, native to the East, but now cultivated largely in the south of Europe and in the West Indies.

any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally