un·der·pin·ning /ˈʌndɚ/
 支撐,建築物下麵的基礎,支柱


 Un·der·pin v. t. [imp. & p. p. Underpinned p. pr. & vb. n. Underpinning.]
 1. To lay stones, masonry, etc., under, as the sills of a building, on which it is to rest.
 2. To support by some solid foundation; to place something underneath for support.

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 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.]

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 underpinning
      See underpin


 underpin
      v 1: support from beneath
      2: support with evidence or authority or make more certain or
         confirm; "The stories and claims were born out by the
         evidence" [syn: corroborate, bear out, support]
      [also: underpinning, underpinned]