Source : Webster's Revised Unabridged Dictionary (1913)

Interdict \In"ter*dict`\, n. [OE. entredit, enterdit, OF.
   entredit, F. interdit, fr. L. interdictum, fr. interdicere to
   interpose, prohibit; inter between + dicere to say. See
   {Diction}.]
   1. A prohibitory order or decree; a prohibition.

            These are not fruits forbidden; no interdict Defends
            the touching of these viands pure.    --Milton.

   2. (R. C. Ch.) A prohibition of the pope, by which the clergy
      or laymen are restrained from performing, or from
      attending, divine service, or from administering the
      offices or enjoying the privileges of the church.

   3. (Scots Law) An order of the court of session, having the
      like purpose and effect with a writ of injunction out of
      chancery in England and America.

Interdict \In`ter*dict"\, v. t. [imp. & p. p. {Interdicted}; p.
   pr. & vb. n. {Interdicting}.] [OE. entrediten to forbid
   communion, L. interdicere, interdictum. See {Interdict}, n.]
   1. To forbid; to prohibit or debar; as, to interdict
      intercourse with foreign nations.

            Charged not to touch the interdicted tree. --Milton.

   2. (Eccl.) To lay under an interdict; to cut off from the
      enjoyment of religious privileges, as a city, a church, an
      individual.

            An archbishop may not only excommunicate and
            interdict his suffragans, but his vicar general may
            do the same.                          --Ayliffe.

Source : WordNet®

interdict
     n 1: an ecclesiastical censure by the Roman Catholic Church
          withdrawing certain sacraments and Christian burial from
          a person or all persons in a particular district
     2: a court order prohibiting a party from doing a certain
        activity [syn: {interdiction}]
     v 1: destroy by firepower, such as an enemy's line of
          communication
     2: command against; "I forbid you to call me late at night";
        "Mother vetoed the trip to the chocolate store" [syn: {forbid},
         {prohibit}, {proscribe}, {veto}, {disallow}] [ant: {permit},
         {permit}]