Source : Webster's Revised Unabridged Dictionary (1913)

Bender \Bend"er\, n.
   1. One who, or that which, bends.

   2. An instrument used for bending.

   3. A drunken spree. [Low, U. S.] --Bartlett.

   4. A sixpence. [Slang, Eng.]

Source : WordNet®

bender
     n 1: a tool for bending; "he used pliers as a bender"
     2: revelry in drinking; a merry drinking party [syn: {carouse},
         {carousal}, {toot}, {booze-up}]
     3: a baseball thrown with spin so that its path curves as it
        approach the batter [syn: {curve}, {curve ball}, {breaking
        ball}]