<p><strong>Noun</strong></p><ul><li>excavation and piling of earth in connection with an engineering operation.</li><li>Military. a construction formed chiefly of earth for protection against enemy fire, used in both offensive and defensive operations.</li><li>an artistic work that consists of a large-scale alteration or modification of an area of land in a configuration designed by an artist or of an artist's sculptural installation, as in a museum or gallery, of soil, rock, or similar elemental materials.</li></ul>