Excavation

Part of speech: noun (n.)

1. The act of excavating, or of making hollow, by cutting, scooping, or digging out a part of a solid mass.

2. A cavity formed by cutting, digging, or scooping. "A winding excavation." Glover.

3. An uncovered cutting in the earth, in distinction from a covered cutting or tunnel.

4. The material dug out in making a channel or cavity. The delivery of the excavations at a distance of 250 feet. E. L. Corthell.