noun

• The act of evacuating; leaving a place in an orderly fashion, especially for safety.
• Withdrawal of troops or civils from a town, country, fortress, etc.
• The act of emptying, clearing of the contents, or discharging, including creating a vacuum.
• Voidance of any matter by the natural passages of the body or by an artificial opening; defecation; also, a diminution of the fluids of an animal body by cathartics, venesection, or other means.
• That which is evacuated or discharged; especially, a discharge by stool or other natural means.
• Abolition; nullification.