Definitions
an approximately triangular surface area between two adjacent arches and the horizontal plane above them
Word origin
From a diminutive in -el of Anglo-Norman spaundre, of uncertain origin, perhaps from Old French espandre (“to expand, extend, spread”). More at spawn, expand.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Arch triangle”8 letters
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