Machine
Two men use a machine to fix a robot

NASA engineers use a machine to repair an arm on a robot. Image Credit: NASA

      a thing made up of fixed and moving parts, used for doing some kind of work



Sentences:
The space shuttle is one of the most complex machines ever built.

My mom put my dirty clothes in the washing machine.



More Information:
http://spaceplace.nasa.gov/en/kids/funphysics.shtml   →
http://www.ueet.nasa.gov/StudentSite/engines.html   →