The act or an instance of moving; a change in place or position. A particular manner of moving. A change in the location of troops, ships, or aircraft for tactical or strategic purposes. A series of actions and events taking place over a period of time and working to foster a principle or policy: a movement toward world peace. An organized effort by supporters of a common goal: a leader of the labor movement. A tendency or trend: a movement toward larger kitchens. A change in the market price of a security or commodity. An evacuation of the bowels. The matter so evacuated. The suggestion or illusion of motion in a painting, sculpture, or design. The progression of events in the development of a literary plot. The rhythmical or metrical structure of a poetic composition. Music A self-contained section of an extended composition. A mechanism, such as the works of a watch, that produces or transmits motion.