Meaning of master-slave manipulator

mas'ter-slave' manip"ulator

Pronunciation: (mas'tur-slāv', mä'stur-), [key]
  1. any of various devices, guided by the hand of the operator, for imitating the motions and tactile sensitivity of the human hand to a greater or lesser extent: used in situations in which direct handling of the objects or materials involved would be dangerous or impossible.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.