Source : Webster's Revised Unabridged Dictionary (1913)

Recuse \Re*cuse"\ (r?*k?z"), v. t. [F. r['e]cuser, or L.
   recusare. See {Recusant}.] (Law)
   To refuse or reject, as a judge; to challenge that the judge
   shall not try the cause. [Obs.] --Sir K. Digby.

Source : WordNet®

recuse
     v 1: disqualify oneself (as a judge, for example) in a particular
          case
     2: challenge or except to a judge as being incompetent or
        interested, in canon and civil law