lou·​ver | \ ˈlü-vər How to pronounce louver (audio) \
variants: or louvre

Definition of louver

1 : a roof lantern or turret often with slatted apertures for escape of smoke or admission of light in a medieval building
2a : an opening provided with one or more slanted fixed or movable fins to allow flow of air but to exclude rain or sun or to provide privacy
b : a finned or vaned device for controlling a flow of air or the radiation of light
c : a fin or shutter of a louver

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Other Words from louver

louvered or less commonly louvred \ ˈlü-​vərd How to pronounce louvred (audio) \ adjective

Examples of louver in a Sentence

Recent Examples on the Web

The IMs is an experiment in making this posture cool-looking, with fractal body sculpting, daring interplays of light and shadow and dramatic vertical fender louvers—an Uber in Tron-land. Dan Neil, WSJ, "Big Questions—and a Few Answers—Coming Out of the Detroit Auto Show," 17 Jan. 2019 The moving louvers fold outward and up and down, providing roof shading, privacy, and a deck-like platform when fully open. Liz Stinson, Curbed, "This apartment building’s facade blooms like a flower," 23 Aug. 2018 There’s a city ordinance requiring parking decks to be screened with metal louvers or grates, but the imposing, blank facade still represented a daunting challenge to the building's appearance. Ely Portillo, charlotteobserver, "Here's how a developer is turning a drab parking deck into a huge Charlotte art piece | Charlotte Observer," 15 May 2018 Other materials include concrete, while details like industrial fittings, glass louvers, wood-burning stove, paneled walls, and built-in storage elevate the design beyond the rustic. Lauren Ro, Curbed, "Gorgeous A-frame retreat is also off-grid," 11 May 2018 At the rear, a combination of Gurney flaps and louvers direct air away from the deck, creating a low-pressure area that draws hot air out of the engine bay. Erik Johnson, Car and Driver, "McLaren Senna GTR: A $1.4 Million, 814-Plus-HP Track-Bound Ballistic Missile," 6 Mar. 2018 Elsewhere in the museum, the louver patterns are reflected directly onto the glass, like a bar code. Nikil Saval, New York Times, "Kengo Kuma’s Architecture of the Future," 15 Feb. 2018 The American Restaurant Other unique design elements include terraced landings, wood louvers on the windows and lots of gleaming brass accents. Sarah Gish, kansascity, "This stunning Kansas City restaurant is the James Beard Foundation's 2018 Design Icon | The Kansas City Star," 7 Mar. 2018 Throughout his buildings, unfinished beams and panels intersect with smoother, thinner louvers. Nikil Saval, New York Times, "Kengo Kuma’s Architecture of the Future," 15 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'louver.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of louver

14th century, in the meaning defined at sense 1

History and Etymology for louver

Middle English lover, from Anglo-French

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Time Traveler for louver

The first known use of louver was in the 14th century

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English Language Learners Definition of louver

: an opening in a door or window that has one or more slanted strips to allow air to flow in and out while keeping out rain and sun
: one of the slanted strips of a louver

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More from Merriam-Webster on louver

Rhyming Dictionary: Words that rhyme with louver

Spanish Central: Translation of louver

Nglish: Translation of louver for Spanish Speakers

Britannica.com: Encyclopedia article about louver

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