abat-jour

French abattre jour any contrivance or apparatus to admit light, or to throw it in a desired direction, as a lamp-shade

abat-jour (plural abat-jours)

1. A skylight, or any beveled aperture made in the wall of an apartment or in a roof, for the better admission of light from above.
2. A sloping, box-like structure, flaring upward and open at the top, attached to a window on the outside, to prevent those within from seeing objects below, or for the purpose of directing light downward into the window.

• Century Dictionary, volume 1, 1889, page 6

From abat (“breaks down”) +‎ jour (“light”).

• IPA^(key): /a.ba.ʒuʁ/

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abat-jour m (plural abat-jours)

1. lampshade
2. (dated) eyeshade
3. (architecture) skylight

• “abat-jour”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Unadapted borrowing from French abat-jour.

• IPA^(key): /a.baˈʒur/
• Rhymes: -ur

abat-jour m or (occasionally) f (invariable)

1. lampshade
2. a lamp with a lampshade, particularly a bedside lamp

• abat-jour in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

abat-jour m (plural abat-jours)

1. (Jersey) blind

From French abat-jour.

• (Central Romagnol): IPA^(key): [ɐbɐˈðuːɾ]

abat-jour m (plural abat-jour)

1. abat-jour

• Masotti, Adelmo (1996) Vocabolario Romagnolo Italiano [Romagnol-Italian dictionary] (in Italian), Bologna: Zanichelli, page 1