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Definition of louver

louver

/ˈluːvər/
(UK: louvre)
lou · ver

Plural:louvers
•
Adjective:louvered
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louver Lexical Profile

louver Game Scores & Validity

• noun

1

North American Each of a set of angled slats or flat strips fixed or hung at regular intervals in a door, shutter, or screen to allow air or light to pass through while keeping out rain or direct sunshine.

Example

"The architect designed the building with a large wooden louver over the southern windows to block the harsh summer sun."


2

North American An entire window, door, or ventilation unit fitted with horizontal, angled slats.

Example

"He installed a louver in the attic to improve air circulation during the hot summer months."


3

North American A domed or lantern-like structure on the roof of a building, originally used in medieval architecture to allow smoke to escape from a central hearth and to admit light.

Example

"The medieval hall was carefully restored to include a traditional louver on the roof, matching its original fourteenth-century design."

Synonyms
View all synonyms for louver

Word Nuance & Usage

In British English, the word is typically spelled 'louvre'. It should not be confused with the capitalized proper noun 'Louvre', which refers to the famous art museum in Paris.

• Rhymes for louver

Word Origin & Etymology

Middle English: from Old French 'lover' or 'lovier' (meaning a skylight or roof opening), originally referring to a domed roof structure used to let smoke escape from a central hearth.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Louver. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/louver
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