Ho'cus-po'cus noun [ Prob. invented by jugglers in imitation of Latin. Confer Hoax , Hocus .] 1. A term used by jugglers in pretended incantations. 2. A juggler or trickster. Sir T. Herbert. 3. A juggler's trick; a cheat; nonsense. Hudibras.
Found on http://www.encyclo.co.uk/webster/H/51


hocus-pocus 1. Nonsense words or phrase used as a formula by quack conjurers. 2. A trick performed by a magician or juggler; sleight-of-hand. 3. Foolishness or empty pretense used especially to disguise deception or chicanery. 4. To play tricks on; to deceive. There is no real proof that hocus-pocus is a blasphemous corruption of the first word...
Found on http://www.wordinfo.info/words/index/info/view_unit/3408/
No exact match found