Un"der*pin`ning (?), n.


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

2. Arch. (a)

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


The foundation, esp. of a frame house.

[Local, U.S.]


© Webster 1913.

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