projectile

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A fired, thrown, or otherwise propelled object, such as a bullet, having no capacity for self-propulsion.
• noun A self-propelled missile, such as a rocket.
• adjective Capable of being impelled or hurled forward.
• adjective Driving forward; impelling.
• adjective Zoology Capable of being thrust outward; protrusile.

from The Century Dictionary.

• Impelling, throwing, driving, or shooting forward: as, a projectile force.
• Caused by impulse; impelled or driven forward.
• In zoology, capable of being thrust forward or protruded, as the jaws of a fish; protrusile.
• noun A body projected, or impelled forward by force, particularly through the air.
• noun Specifically, a missile intended to be projected from a cannon by the explosive force of gunpowder or some similar agent.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Projecting or impelling forward.
• adjective Caused or imparted by impulse or projection; impelled forward.
• noun A body projected, or impelled forward, by force; especially, a missile adapted to be shot from a firearm.
• noun (Mech.) A part of mechanics which treats of the motion, range, time of flight, etc., of bodies thrown or driven through the air by an impelling force.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun an object intended to be or having been fired from a weapon.
• noun physics any object propelled through space by the application of a force.
• adjective of an object In the manner of something fired from a weapon.
• adjective of a weapon Designed to discharge projectiles towards its target.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any vehicle self-propelled by a rocket engine
• noun a weapon that is forcibly thrown or projected at a targets but is not self-propelled
• adjective impelling or impelled forward