senna

n [U] dried leaves of a tropical plant, used as a laxative 旃那叶, 山扁豆叶, 番泻叶（热带一种植物的乾叶, 用作通便剂）.

send for sb., send in, send off, send out, send round, send sb. doing sth., send sb. to school, send up, send-off, send-up, sender, senescence, senescent, senile, senile dementia, senility, senior, senior citizen, senior high school, seniority, senor, senora, senorita, sensation, sensational, sensationalism, sensationalist, sensationalize, sensationalise, sensationally, sense, sense-organ, senseless, senselessly, senselessness, sensibility, sensible, sensibly, sensitive, sensitively, sensitivity,