Source : Webster's Revised Unabridged Dictionary (1913)

Chopper \Chop"per\, n.
   One who, or that which, chops.

Source : WordNet®

chopper
     n 1: a grounder that bounces high in the air [syn: {chop}]
     2: informal terms for a human `tooth' [syn: {pearly}]
     3: an aircraft without wings that obtains its lift from the
        rotation of overhead blades [syn: {helicopter}, {whirlybird},
         {eggbeater}]
     4: a butcher's knife having a large square blade [syn: {cleaver},
         {meat cleaver}]