spandrel
/ˈspændrəl/noun
1- Architecture the almost triangular space between one side of the outer curve of an arch, a wall, and the ceiling or framework【建筑】拱肩。
1.1
- the space between the shoulders of adjoining arches and the ceiling or moulding above拱门下的三角形空间, 上下层窗间墙。
词源
late Middle English: perhaps from Anglo-Norman French spaund(e)re, or from espaundre 'expand'.