lou·​ver ˈlü-vər How to pronounce louver (audio)
variants or louvre
: a roof lantern or turret often with slatted apertures for escape of smoke or admission of light in a medieval building
: 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
: a finned or vaned device for controlling a flow of air or the radiation of light
: a fin or shutter of a louver
louvered adjective
or less commonly louvred

Examples of louver in a Sentence

Recent Examples on the Web Unveiled earlier this summer as part of the automaker’s 110th-anniversary celebrations, the Valour features a sculpted look that calls to mind the striking V8 Vantage from the 1970s and ‘80s (especially its window louvers). Bryan Hood, Robb Report, 26 Apr. 2024 Lastly, the contractors went through to identify ventilation issues that had only accelerated the decline of the lighthouse and replaced two of the tower's windows with ventilation louvers for better airflow. Kylie Martin, Detroit Free Press, 19 Apr. 2024 One of my favorite features of this yacht’s design was a detail on the outer edge of the galley bar where lacquered, aquamarine slats call to mind the louvers common on La Dolce Vita–era runabouts. Kevin Koenig, Robb Report, 13 Mar. 2024 Another feature that made this fan stand out is its internal oscillation — the fan louvers rotate within the housing, keeping the unit more stable. Camryn Rabideau, Peoplemag, 12 Mar. 2024 Stone louvers on the exterior mitigate dust and achieve transparency. Robin Pogrebin, New York Times, 5 Mar. 2024 Other attractive details include a two-seat cabin covered in black leather, black louvers over the rear window, and a set of white 16-inch Campagnolo alloy wheels. Bryan Hood, Robb Report, 18 Jan. 2024 The firm also installed kinetic/operable louvers that slide along the home on the lake side and rotate. Emma Reynolds, Robb Report, 21 Dec. 2023 That house incorporated many of the vertical louvers and reeding elements that permeated our design. Caron Golden, San Diego Union-Tribune, 11 Nov. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'louver.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


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

Dictionary Entries Near louver

Cite this Entry

“Louver.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/louver. Accessed 24 May. 2024.

Kids Definition


variants or louvre
: 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
: one of the slanted strips of a louver

More from Merriam-Webster on louver

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