plique-à-jour

noun

ˌplēk-(ˌ)ä-ˈzhu̇r 

: a style of enameling in which usually transparent enamels are fused into the openings of a metal filigree to produce an effect suggestive of stained glass

Word History

Etymology

French, literally, braid letting in daylight

First Known Use

1899, in the meaning defined above