Source : Webster's Revised Unabridged Dictionary (1913)

Tricker \Trick"er\, n.
   One who tricks; a trickster.

Tricker \Trick"er\, n.
   A trigger. [Obs. or Prov. Eng.] --Boyle.

Source : WordNet®

tricker
     n : someone who plays practical jokes on others [syn: {prankster},
          {cut-up}, {trickster}, {hoaxer}, {practical joker}]