Source : Webster's Revised Unabridged Dictionary (1913)

Bludgeon \Bludg"eon\, n. [Cf. Ir. blocan a little block, Gael.
   plocan a mallet, W. plocyn, dim. of ploc block; or perh.
   connected with E. blow a stroke. Cf. {Block}, {Blow} a
   stroke.]
   A short stick, with one end loaded, or thicker and heavier
   that the other, used as an offensive weapon.

Source : WordNet®

bludgeon
     n : a club used as a weapon
     v 1: overcome or coerce as if by using a heavy club; "The teacher
          bludgeoned the students into learning the math formulas"
     2: strike with a club or a bludgeon [syn: {club}]