senna
n. மலமிளக்கு மருந்தாகப் பயன்படும் நிலவாவிரை இனச் செடிவகை.
Sen"na, n. Etym: [Cf. It. & Sp. sena, Pg. sene, F. séné; all fr. Ar. sana.] 1. (Med.) Defn: The leaves of several leguminous plants of the genus Cassia. (C. acutifolia. C. angustifolia, etc.). They constitute a valuable but nauseous cathartic medicine. 2. (Bot.) Defn: The plants themselves, native to the East, but now cultivated largely in the south of Europe and in the West Indies. Bladder senna. (Bot.) See under Bladder. -- Wild senna (Bot.), the Cassia Marilandica, growing in the United States, the leaves of which are used medicinally, like those of the officinal senna.