Meaning of EXCAVATION in English
noun a cavity formed by cutting, digging, or scooping.
2. excavation ·noun the material dug out in making a channel or cavity.
3. excavation ·noun an uncovered cutting in the earth, in distinction from a covered cutting or tunnel.
4. excavation ·noun the act of excavating, or of making hollow, by cutting, scooping, or digging out a part of a solid mass.
Webster English vocab. Английский словарь Webster. 2012