prolapse
/prəuˈlæps; pro`læps/ v[I]
(medical 医) (of an organ in the body, eg the bowel or uterus) slip forward or down so that it is out of place （指器官, 如直肠或子宫）脱垂, 脱出.
prolapse / ˈprəulæps; `prolæps/ n (medical 医) (condition caused by) this movement 脱垂; 脱出.