Definition of: revoke

(ri·vōk′) v. ·voked, ·vok·ing v.t.
1. To annul or make void by recalling; cancel; rescind.
2. Obs. To call or summon back; recall.
—v.i.
3. In card games, to fail to follow suit when possible and when required by the rules. See synonyms under ABOLISH, ANNUL, CANCEL, RECANT, RENOUNCE.
—noun
1. An annulling or cancellation.
2. In card games, neglect to follow suit; a renege. [<OF revoquer <L revocare <re- back + vocare call]
—re·vok′er noun