Source : Webster's Revised Unabridged Dictionary (1913)

Revoke \Re*voke"\, v. t. [imp. & p. p. {Revoked};p. pr. & vb. n.
   {Revoking}.] [F. r['e]voquer, L. revocare; pref. re- re- +
   vocare to call, fr. vox, vocis, voice. See {Voice}, and cf.
   {Revocate}.]
   1. To call or bring back; to recall. [Obs.]

            The faint sprite he did revoke again, To her frail
            mansion of morality.                  --Spenser.

   2. 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. --Shak.

   3. To hold back; to repress; to restrain. [Obs.]

            [She] still strove their sudden rages to revoke.
                                                  --Spenser.

   4. To draw back; to withdraw. [Obs.] --Spenser.

   5. To call back to mind; to recollect. [Obs.]

            A man, by revoking and recollecting within himself
            former passages, will be still apt to inculcate
            these sad memoris to his conscience.  --South.

   Syn: To abolish; recall; repeal; rescind; countermand; annul;
        abrogate; cancel; reverse. See {Abolish}.

Revoke \Re*voke"\, v. i. (Card Playing)
   To fail to follow suit when holding a card of the suit led,
   in violation of the rule of the game; to renege. --Hoyle.

Revoke \Re*voke"\, n. (Card Playing)
   The act of revoking.

         She [Sarah Battle] never made a revoke.  --Lamb.

Source : WordNet®

revoke
     n : the mistake of not following suit when able to do so [syn: {renege}]
     v 1: fail to follow suit when able and required to do so
     2: annul by recalling or rescinding; "He revoked the ban on
        smoking"; "lift an embargo"; "vacate a death sentence"
        [syn: {annul}, {lift}, {countermand}, {reverse}, {repeal},
         {overturn}, {rescind}, {vacate}]