The Collaborative International Dictionary of English v.0.48:

Prestidigitator \Pres`ti*dig"i*ta`tor\, n. [L. praesto ready +
   digitus finger: cf. F. prestidigitateur.]
   One skilled in legerdemain or sleight of hand; a juggler.
   [1913 Webster]

WordNet (r) 3.0 (2006):

prestidigitator
    n 1: someone who performs magic tricks to amuse an audience
         [syn: magician, prestidigitator, conjurer,
         conjuror, illusionist]