a jour

See also: à jour and ajour

pierced, cut away, or made translucent in such a way as to form a design
having figured openwork
decorated with translucent, pierced, or openwork designs (used of carving, metalwork, lace, drawnwork, or cutwork)

From French à jour (“up-to-date”), first part from Middle French [Term?], from Old French a (“to, towards, belonging to”), from Latin ad (“to, towards, up to, at”), from Proto-Italic *ad (“toward, to, on, up to, for”), from Proto-Indo-European *h₂éd (“to, at”). Last part from French jour (“day, daylight, light”), from Old French jorn, jor (“day”), from Latin diurnum [tempus], from diurnus (“of the day, daily”), from earlier *diusnus, from both diūs, from Old Latin, from Proto-Italic *djous (“day, sky; Jupiter”) from Proto-Indo-European *dyḗws (“sky, heaven; sky god”), from earlier *dyéws, from *dyew- (“to be bright; sky, heaven”) and *s (creates nouns) + and from -nus (forms adjectives), from Proto-Italic *-nos, from Proto-Indo-European *-nós (forms verbal adjectives).

English