but·tress /ˈbʌtrəs/
 拱壁,扶壁,支援物(vt.)支援,以扶壁支撐


 But·tress n.
 1. Arch. A projecting mass of masonry, used for resisting the thrust of an arch, or for ornament and symmetry.
 Note: ☞ When an external projection is used merely to stiffen a wall, it is a pier.
 2. Anything which supports or strengthens. “The ground pillar and buttress of the good old cause of nonconformity.”
 Flying buttress. See Flying buttress.


 But·tress v. t. [imp. & p. p. Buttressed (░); p. pr. & vb. n. Buttressing.] To support with a buttress; to prop; to brace firmly.
    To set it upright again, and to prop and buttress it up for duration.   --Burke.

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 buttress
      n : a support usually of stone or brick; supports the wall of a
          building [syn: buttressing]
      v 1: reinforce with a buttress; "Buttress the church"
      2: make stronger or defensible; "buttress your thesis"