MOTION, n. A property, condition or state of matter. The existence and possibility of motion is denied by many philosopher's, who point out that a thing cannot move where it is and cannot move where it is not. Others, with Galileo, say: "And yet it moves." It is not the province of the lexicographer to decide.
"How charming is divine Philosophy!" Milton
2010 Update: An inclement increment in which a child finds purpose, an adult finds failure and a vase finds death. Zeno's intelligent design.