what does the word locomotive mean

This picture amazingly captures the think layer of clouds over the valley near the south of Lake Como, northern Italy. In the above image, the dense cloud hides almost the valley and leaves some artificial lights that make the town like an opaque blanket. The village over distance is clearly seen out of your blanket. Most people have either watched or been aware of the movie Wall-e. It was a a lovely film, set way into the future, regarding the adventures of a little robot that was put aside on the planet to pay off the mess forgotten by humans. The humans are living in space since they wait for a earth for being re-habitable so they can all return. Wall-e meets another robot called EVE, who may have been provided for earth to hunt out any warning signs of new life (growing plants), falls in love and follows her into space where they may be involved in plenty of antics before Wall-e eventually returns to earth with EVE, the humans follow plus they start so that it is an excellent location to live again.