Underpinning

ជាទម្រង់ Gerund ឬ Present Participle នៃ underpin

1.

The act of one who underpins; the act of supporting by stones, masonry, or the like.

2.

That by which a building is underpinned; the material and construction used for support, introduced beneath a wall already constructed.

3.

The foundation, esp. of a frame house.