Source : Webster's Revised Unabridged Dictionary (1913)

Locomotion \Lo`co*mo"tion\, n. [L. locus place + motio motion:
   cf. F. locomotion. See {Local}, and {Motion}.]
   1. The act of moving from place to place. `` Animal
      locomotion.'' --Milton.

   2. The power of moving from place to place, characteristic of
      the higher animals and some of the lower forms of plant
      life.

Source : WordNet®

locomotion
     n 1: the power or ability to move [syn: {motive power}, {motivity}]
     2: self-propelled movement [syn: {travel}]