Evacuate

Verb

1. To leave or withdraw from; to quit; to retire from.

   "The soldiers evacuated the fortress."

2. To cause (or help) to leave or withdraw from.

   "The firefighters decided to evacuate all the inhabitants from the street."

3. To make empty; to empty out; to remove the contents of, including to create a vacuum.

   "The scientist evacuated the chamber before filling it with nitrogen."

4. To make empty; to deprive.
5. To remove; to eject; to void; to discharge, as the contents of a vessel, or of the bladder or the bowels (to stool).