E·vac·u·a·tion n.
1. The act of emptying, clearing of the contents, or discharging. Specifically: (a) Mil. Withdrawal of troops from a town, fortress, etc. (b) Med. 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.
2. That which is evacuated or discharged; especially, a discharge by stool or other natural means.
3. Abolition; nullification. [Obs.]
Evacuation day, the anniversary of the day on which the British army evacuated the city of New York, November 25, 1783.
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