<p><strong>Noun</strong></p><ul><li>A machine that resembles a human and does mechanical, routine tasks on command.</li><li>A person who acts and responds in a mechanical, routine manner, usually subject to another's will; automaton.</li><li>Any machine or mechanical device that operates automatically with humanlike skill.</li></ul><p><strong>Adjective</strong></p><ul><li>Operating automatically: a robot train operating between airline terminals.</li></ul>