sennan. 山扁豆、番瀉葉、輕瀉劑學術名詞番瀉：藥學旃那：藥學番泄葉：獸醫學鐵刀木屬：植物學英文釋義any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally