Source : Webster's Revised Unabridged Dictionary (1913)

Conjure \Con*jure"\ (k[o^]n*j[=u]r"), v. t. [imp. & p. p.
   {Conjured} (-j[=u]rd"); p. pr. & vb. n. {Conjuring}.] [F.
   conjurer, fr. L. conjurare to swear together, to conspire;
   con- + jurare to swear. See {Jury}.]
   To call on or summon by a sacred name or in solemn manner; to
   implore earnestly; to adjure.

         I conjure you, let him know, Whate'er was done against
         him, Cato did it.                        --Addison.

Source : WordNet®

conjuring
     n : calling up a spirit or devil [syn: {conjuration}, {conjury},
          {invocation}]