Source : Webster's Revised Unabridged Dictionary (1913)

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.