flat arch.

A masonry arch with an approximately flat lower surface, formed by wedge-shaped units rather than a single lintel.

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Words that belong together

• brick flat arch

On the page

A brick flat arch spanned the window.

The flat arch showed fine wedge-shaped joints.

Usage notes

Primary category: architecture. Forms: Singular flat arch; plural flat arches. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.