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

Other Words from louver

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

Examples of louver in a Sentence

Recent Examples on the Web This stylish armoire helps hide your excess clutter behind louver detailed doors. Tim Kohut, BGR, 30 June 2021 But Walker said the volunteers had only replaced panels in the louvers. Bob Sandrick, cleveland, 14 Apr. 2020 Redesigned front fenders with louvers increase front downforce while smoothing airflow for greater high-speed stability. Tribune News Service, cleveland, 4 Apr. 2020 There's a familiar AMG grille with vertical louvers, a new front bumper with mouthy black air intakes, flared wheel arches, a rear diffuser, and big rectangular exhaust outlets. Scott Oldham, Car and Driver, 2 Mar. 2020 Cut the foam at least 4 inches larger than the vent and secure it with double-sided tape, or length of wire: From outside, pass the wire around the vent’s louvers, through the foam block, and then twist together the wire ends on the inside. Joseph Truini, Popular Mechanics, 17 Feb. 2020 In 2017, City Club President Terry Toth said club volunteers had replaced missing and/or aging louvers earlier that year. Bob Sandrick, cleveland, 21 Jan. 2020 However, instead of fabric, they're made of hard slats or louvers that tilt to let light in. Jessica Dailey, House Beautiful, 1 Nov. 2019 But today, Walker said the volunteers had only replaced panels in the louvers. Bob Sandrick, cleveland, 21 Jan. 2020 See More

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.

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

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Cite this Entry

“Louver.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/louver. Accessed 11 Aug. 2022.

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More from Merriam-Webster on louver

Nglish: Translation of louver for Spanish Speakers

Britannica.com: Encyclopedia article about louver


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