Source : Webster's Revised Unabridged Dictionary (1913)

Stepper \Step"per\, n.
   One who, or that which, steps; as, a quick stepper.

Source : WordNet®

stepper
     n 1: a professional dancer [syn: {hoofer}]
     2: a motor (especially an electric motor) that moves or rotates
        in small discrete steps [syn: {stepping motor}]
     3: a horse trained to lift its feet high off the ground while
        walking or trotting [syn: {high stepper}]