underpinning
n. அடியுதைவுக் கட்டுமானம்.
Un"der*pin`ning, n. 1. 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. (b) The foundation, esp. of a frame house. [Local, U.S.]