Source : Webster's Revised Unabridged Dictionary (1913)

Gymnastics \Gym*nas"tics\, n.
   Athletic or disciplinary exercises; the art of performing
   gymnastic exercises; also, disciplinary exercises for the
   intellect or character.

Source : WordNet®

gymnastics
     n : a sport that involves exercises intended to display strength
         and balance and agility [syn: {gymanstic exercise}]