a machine that resembles a human and does mechanical, routine tasks on command.

a person who acts and responds in a mechanical, routine manner, usually subject to another's will; automaton.

any machine or mechanical device that operates automatically with humanlike skill.

operating automatically

a robot train operating between airline terminals.

noun

automation , bionic person , cyborg , mechanical personnotes:a robot is a fully mechanical conscienceless device; an android is an autonomous humanlike robot , android , humanoid , machine