Relieving arch

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(Arch.) a discharging arch. See under Discharge, v. t.

See also: Relieving

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The red brick storefront is distinguished by a square tower and a relieving arch whose spandrel panel displays the year of construction--1890--in high relief.
Characteristic of this period are doorways with relieving arches above their architraves.