The Collaborative International Dictionary of English v.0.48:

Conjuration \Con`ju*ra"tion\, n. [L. conjuratio, cf. F.
   conjuration.]
   1. The act of calling or summoning by a sacred name, or in
      solemn manner; the act of binding by an oath; an earnest
      entreaty; adjuration.
      [1913 Webster]

            We charge you, in the name of God, take heed; . . .
            Under this conjuration speak, my lord. --Shak.
      [1913 Webster]

   2. The act or process of invoking supernatural aid by the use
      of a magical form of words; the practice of magic arts;
      incantation; enchantment.
      [1913 Webster]

            Pretended conjurations and prophecies of that event.
                                                  --Hallam.
      [1913 Webster]

   3. A league for a criminal purpose; conspiracy. [Obs.] "The
      conjuration of Catiline." --Sir T. Elyot.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "conjuration":
   abracadabra, charm, conjurement, escamotage, evocation,
   exorcisation, exorcism, exsufflation, hanky-panky, hocus-pocus,
   hokey-pokey, incantation, invocation, jiggery-pokery, jugglery,
   juggling, legerdemain, magic formula, magic words, monkey business,
   mumbo jumbo, open sesame, prestidigitation, rune, sleight of hand,
   trickery