Definition of evacuates:
(v) :
(transitive) To leave or withdraw from; to quit; to retire from.
(v) :
To cause (or help) to leave or withdraw from.
(v) :
To make empty; to empty out; to remove the contents of, including to create a vacuum.
(v) :
To remove; to eject; to void; to discharge, as the contents of a vessel, or of the bladder or the bowels (to stool).
(v) :
(figurative) To make empty; to deprive.
(v) :
To make void; to nullify; to vacate.