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abat-jour

[ah-bah-zhoo r; French a-ba-zhoor]
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noun, plural a·bat-jours [ah-bah-zhoo rz; French a-ba-zhoor] /ˌɑ bɑˈʒʊərz; French a baˈʒur/.
  1. a device, as a skylight or reflector, for diverting light into a building.
  2. a sloping screen for cutting off the view between an interior or porch and a lower area in front of a building.
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Origin of abat-jour

1820–30; < French: literally, it throws down (abat) the daylight ( jour). See abate, journey
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018