trun·cheon /ˈtrʌnʧən/
  警棍,權杖,職杖(vt.)用警棍打
  Trun·cheon n.
  1. A short staff, a club; a cudgel; a shaft of a spear.
     With his truncheon he so rudely struck.   --Spenser.
  2. A baton, or military staff of command.
     The marshal's truncheon nor the judges robe.   --Shak.
  3. A stout stem, as of a tree, with the branches lopped off, to produce rapid growth.
  Trun·cheon, v. t. To beat with a truncheon.
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  truncheon
       n : a short stout club used primarily by policemen [syn: nightstick,
            billy, billystick, billy club]