to finish is a form of:

Excavation



noun
1.
(hole or cavity made by excavating, act of excavating) ការជីក, អណ្ដៅ, អណ្ដូង
ENGLISH MEANING
noun
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.
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.