The definition of a locomotor is a machine, person or animal that can move from one place to another.(noun)
An example of a locomotor is a lab rat moving around a maze in an experiment.
See locomotor in Webster's New World College Dictionary
Origin: loco- + L motor, mover
See locomotor in American Heritage Dictionary 4
Origin: Latin locō, from a place
Origin: , ablative of locus, place
Origin: + motor.
Learn more about locomotor