Hence, to annul, by recalling or taking back; to repeal; to rescind; to cancel; to reverse, as anything granted by a special act; as, , to revoke a will, a license, a grant, a permission, a law, or the like.
To recall a power or authority previously conferred, or annul, repeal, rescind or cancel privileges or registration. In the case of Commodity Futures Trading Commission registration proceedings, to take away a previously granted registration.
A revoke (also called a renege) is a violation of important rules regarding the play of tricks in trick-taking card games serious enough to render the round invalid. A revoke is a violation ranked in seriousness somewhat below overt cheating, with the status of a more minor offense only because, when it happens, it is usually accidental.