Small pieces of broken stone or brick, typically from a building or wall that has been damaged.

A substance, such as air, that is like a vapor and has no fixed shape and no fixed volume.

A celestial object consisting of a nucleus of ice and dust and, when near the sun, a "tail" of gas and dust particles pointing away from the sun.

The force that attracts a body toward the center of the earth, or toward any other physical body having mass.

A short form of a word or group of words, made by leaving out certain letters and replacing them with an apostrophe.

A region in the solar system, located roughly between the orbits of the planets Mars and Jupiter, that contains many solid, irregularly shaped bodies.

To move or rest on the surface of a liquid without sinking, or to drift slowly through the air.

The action of damaging or destroying something so that it no longer exists or cannot be repaired.

The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

A statement of the exact meaning of a word, especially in a dictionary.

Exceptionly large, heavy, and solid.

Fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces.

Strength or energy as an attribute of physical action or movement; a push or a pull.

To break something into many small pieces violently or with a loud noise.

To collide violently with an obstacle or another vehicle, typically causing damage.