"Merriam-Webster describes a robot as a "machine that looks like a human being and performs various complex acts (as walking or talking) of a human being", or a "device that automatically performs complicated often repetitive tasks", or a "mechanism guided by automatic controls".
"From both the Czech and the Slovak robota. First appeared in the 1921 science-fiction play R.U.R. by Karel Čapek after having been suggested to him by his brother Josef".
First robots in literature. Wizard of Oz. Rossum's Robots.