(1):

(v. t.) To defeat; to put an end to.

(2):

(v. t.) To make vacant; to leave empty; to cease from filling or occupying; as, it was resolved by Parliament that James had vacated the throne of England; the tenant vacated the house.

(3):

(v. t.) To annul; to make void; to deprive of force; to make of no authority or validity; as, to vacate a commission or a charter; to vacate proceedings in a cause.