The Collaborative International Dictionary of English v.0.48:

Juggler \Jug"gler\, n. [OE. jogelour, juglur, OF. jogleor,
   jugleor, jongleor, F. jongleur, fr. L. joculator a jester,
   joker, fr. joculus a little jest or joke, dim. of jocus jest,
   joke. See Joke, and cf. Jongleur, Joculator.]
   [1913 Webster]
   1. One who juggles; one who practices or exhibits tricks by
      sleight of hand; one skilled in legerdemain; a conjurer.
      [Archaic]

   Note: This sense is now expressed by magician or
         conjurer.
         [1913 Webster +PJC]

               As nimble jugglers that deceive the eye. --Shak.
         [1913 Webster]

               Jugglers and impostors do daily delude them.
                                                  --Sir T.
                                                  Browne.
         [1913 Webster]

   2. A deceiver; a cheat. --Shak.
      [1913 Webster]

   3. A person who juggles objects, i. e. who maintains several
      objects in the air by passing them in turn from one hand
      to another.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Conjurer \Con*jur"er\, n.
   One who conjures; one who calls, entreats, or charges in a
   solemn manner.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Conjurer \Con"jur*er\, n.
   1. One who practices magic arts; one who pretends to act by
      the aid super natural power; also, one who performs feats
      of legerdemain or sleight of hand.
      [1913 Webster]

            Dealing with witches and with conjurers. --Shak.
      [1913 Webster]

            From the account the loser brings,
            The conjurer knows who stole the things. --Prior.
      [1913 Webster]

   2. One who conjectures shrewdly or judges wisely; a man of
      sagacity. [Obs.] --Addison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

conjurer
    n 1: someone who performs magic tricks to amuse an audience
         [syn: magician, prestidigitator, conjurer,
         conjuror, illusionist]
    2: a witch doctor who practices conjury [syn: conjurer,
       conjuror, conjure man]

Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "conjurer":
   Comus, Faust, artist, artiste, belly dancer, burlesque queen,
   chorine, chorus boy, chorus girl, coryphee, dancer, dancing girl,
   diabolist, diviner, dowser, ecdysiast, enchanter, entertainer,
   escamoteur, exotic dancer, female impersonator, geisha,
   geisha girl, guisard, guiser, hoofer, illusionist, impersonator,
   juggler, mage, magian, magician, magus, miracle-worker, mountebank,
   mummer, musician, nautch girl, necromancer, peeler, performer,
   prestidigitator, public entertainer, show girl, singer,
   sleight-of-hand performer, sorcerer, stripper, stripteaser,
   stripteuse, thaumaturge, thaumaturgist, theurgist, tricker,
   trickster, vaudevillian, vaudevillist, voodooist, warlock,
   water witch, wizard