subshrubby senna, Cassia marilandica, of the eastern U.S., having yellow flowers
any plant, shrub, or tree belonging to the genus Cassia, of the legume family, having pinnate leaves and large clusters of flowers
any of a genus (Cassia syn. Senna) of leguminous herbs, shrubs, and trees native to warm regions
any of various cathartic drugs consisting of the dried leaflets of certain of these plants, as one drug (Alexandrian senna) derived from C. acutifolia, or another (Tinnevelly senna) derived from C. angustifolia