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abat-jour

noun \ ˌäˌbäˈzhu̇(ə)r , F ȧbȧzhüür \

Definition of abat-jour

plural abat-jours \-u̇(ə)rz, -üür\
1 :a device (such as a sloping soffit of a lintel or a movable screen) for deflecting daylight downward as it enters a window
2 :skylight

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Origin and Etymology of abat-jour

borrowed from French, literally, “(it) strikes down (abat) the daylight (jour),” from abattre “to strike down” + jour “day, daylight,” going back to Old French jorn, jor, going back to Late Latin diurnum (Latin, “daily ration, daybook”), from neuter of Latin diurnus “daily”

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