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jack arch

noun, Architecture
Origin of jack arch
1880-85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for jack arch
  • While the brick jack arch span is strong, the stone abutments are not and are braced.
  • Each closet is lighted by a window topped by a gauged-brick jack arch.
  • Each is topped by a four-light transom and a plaster jack arch.
  • Windows have original narrow molded wood casings, are each capped by a brick jack arch, and are flanked by historic wood shutters.
  • The entrance consists of the original paneled door within a three-part architrave surmounted by an ungauged brick jack arch.
  • The remaining firs v, floor windows have a jack arch of soldiers under a short course of rowlocks.

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