The American Heritage® Dictionary of the English Language, 4th Edition
n. A mechanical device that sometimes resembles a human and is capable of performing a variety of often complex human tasks on command or by being programmed in advance.
n. A machine or device that operates automatically or by remote control.
n. A person who works mechanically without original thought, especially one who responds automatically to the commands of others.
n. A machine built to carry out some complex task or group of tasks, especially one which can be programmed.
n. An intelligent mechanical being designed to look like a human or other creature, and usually made from metal.
n. A person who does not seem to have any emotions.
n. A traffic light (from earlier robot policeman).
n. A theodolite which follows the movements of a prism and can be used by a one-man crew.
n. A style of dance popular in disco whereby the dancer impersonates the movement of a robot
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a mechanism that can move automatically
Word Usage
"The term robot derives from the Czech word robit, meaning "work," and came into wide use in 1923 when Karl Capek wrote a play R. U. R. (Rossum's Universal Robots), in which mechanical beings did all the work for man."