A cruise missile is a guided missile used against terrestrial targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed.
Cruise Missile by Largest Dams
Cruise missiles are designed to deliver a large warhead over long distances with high precision; that is, small circular error probability.
The term warhead refers to the explosive or toxic material that is delivered by a missile, rocket, or torpedo.
Russian Cruise Missile Flyby - Iraq by GlobalLeaks News
Modern cruise missiles are capable of travelling at supersonic or high subsonic speeds, are self-navigating, and are able to fly on a non-ballistic, extremely low-altitude trajectory.