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]