The Collaborative International Dictionary of English v.0.48:

Bamboozle \Bam*boo"zle\ (b[a^]m*b[=oo]"z'l), v. t. [imp. & p. p.
   Bamboozled (b[a^]m*b[=oo]"z'ld); p. pr. & vb. n.
   Bamboozling (b[a^]m*b[=oo]"zl[i^]ng).] [Said to be of Gipsy
   origin.]
   To deceive by trickery; to cajole by confusing the senses; to
   hoax; to mystify; to humbug. [Colloq.] --Addison.
   [1913 Webster]

         What oriental tomfoolery is bamboozling you? --J. H.
                                                  Newman.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bamboozle
    v 1: conceal one's true motives from especially by elaborately
         feigning good intentions so as to gain an end; "He
         bamboozled his professors into thinking that he knew the
         subject well" [syn: bamboozle, snow, hoodwink, pull
         the wool over someone's eyes, lead by the nose, play
         false]