louver

noun

lou·​ver ˈlü-vər How to pronounce louver (audio)
variants or louvre
1
: a roof lantern or turret often with slatted apertures for escape of smoke or admission of light in a medieval building
2
a
: 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
louvered adjective
or less commonly louvred

Examples of louver in a Sentence

Recent Examples on the Web
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These observations were then translated into the home’s design, including the placement of louvers to modulate light and shade and massive windows that both frame the sweeping views afforded by the location and allow for natural lighting and cross-ventilation during the day. Tori Latham, Robb Report, 9 Apr. 2025 There are no louvers on the long hood, which in itself, is the longest on a Morgan. New Atlas, 23 Mar. 2025 Overhangs and sun-shading louvers outside of the kitchen and family room control glare without blocking the views to Lake Michigan below. Dan Howarth, Architectural Digest, 17 Mar. 2025 This helps encourage airflow and movement inside the home, while adjustable louvers are used to control sunlight, blocking it in summer and maximizing it for warmth in winter. Adam Williams march 01, New Atlas, 1 Mar. 2025 See All Example Sentences for louver

Word History

Etymology

Middle English lover, from Anglo-French

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
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 23 Apr. 2025.

Kids Definition

louver

noun
lou·​ver
variants or louvre
1
: an opening provided with one or more slanted strips to allow flow of air or light but to exclude rain or sun or to provide privacy
2
: one of the slanted strips of a louver
louvered
-vərd
adjective

More from Merriam-Webster on louver

Last Updated: - Updated example sentences
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