Source : Webster's Revised Unabridged Dictionary (1913)

Peculator \Pec"u*la`tor\, n. [L.]
   One who peculates. ``Peculators of the public gold.''
   --Cowper.

Source : WordNet®

peculator
     n : someone who violates a trust by taking (money) for their own
         use [syn: {embezzler}, {defalcator}]