Challenge: Where does the word "robot" come from?

Last week I issued a challenge to the middle schoolers currently in the Beginner Robotics Friday Group.

Where does the word "robot" come from?  Who coined the phrase? When was it first used?  What language does the word come from, and what does it mean?

Edit:  OK, here's the answer, for all of you who are wondering!  The word robot comes from the Czech word "robota", meaning servitude or forced labor; also it could be used to describe a serf or peasant.  It was first used by Karel Capek in his play Rossum's Universal Robots in 1920.  (Source: http://www.sciencefriday.com/program/archives/201104226)