Source : Webster's Revised Unabridged Dictionary (1913)

Overrule \O`ver*rule"\, v. t. [imp. & p. p. {Overruled}; p. pr.
   & vb. n. {Overruling}.]
   1. To rule over; to govern or determine by superior
      authority.

   2. To rule or determine in a contrary way; to decide against;
      to abrogate or alter; as, God overrules the purposes of
      men; the chairman overruled the point of order.

            His passion and animosity overruled his conscience.
                                                  --Clarendon.

            These [difficulties] I had habitually overruled.
                                                  --F. W.
                                                  Newman.

   3. (Law) To supersede, reject, annul, or rule against; as,
      the plea, or the decision, was overruled by the court.

Overrule \O`ver*rule"\, v. i.
   To be superior or supreme in rulling or controlling; as, God
   rules and overrules. --Shak.

Source : WordNet®

overrule
     v : rule against; "The Republicans were overruled when the House
         voted on the bill" [syn: {overturn}, {override}, {overthrow},
          {reverse}]