leg·er·de·main /ˌlɛʤɚ/
  戲法,騙術,詭辯
  Leg·er·de·main n.  Sleight of hand; a trick of sleight of hand; hence, any artful deception or trick.
     He of legierdemayne the mysteries did know.   --Spenser.
     The tricks and legerdemain by which men impose upon their own souls.   --South.
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  legerdemain
       n : an illusory feat; considered magical by naive observers
           [syn: magic trick, conjuring trick, trick, magic,
            conjuration, illusion, deception]