·noun A cavity formed by cutting, digging, or scooping.
II. Excavation ·noun The material dug out in making a channel or cavity.
III. Excavation ·noun An uncovered cutting in the earth, in distinction from a covered cutting or tunnel.
IV. Excavation ·noun The act of excavating, or of making hollow, by cutting, scooping, or digging out a part of a solid mass.