Definition of louver in English:

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Pronunciation: /ˈlo͞ovər/
(also louvre)


Image of louver
1Each 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.
Example sentences
  • Externally, the building's horizontality is emphasized and given texture by a covering of narrow larch slats and by louvres over glass doors on the west.
  • These are high ceilings, big windows and doors, with louvres, mosquito netting on four-poster beds.
  • These days the computer room is ventilated by fan and also has louvres in the door.
2A domed structure on a roof, with side openings for ventilation.
Example sentences
  • It has a steeply pitched octagonal roof, drawing smoke and steam upwards from the great corner fireplaces to an elaborate central louvre.
  • In appearance, they are like medieval louvres and were designed to trap the wind from any direction then funnel it through a hollow shaft to the rooms below.



Pronunciation: /ˈlo͞ovərd/
Example sentences
  • She tried to achieve a similar transitional effect using structural elements only, with slatted awnings and louvred screens at different angles, allowing a constantly shifting, complicated play of light and shadow.
  • The bathrooms in each of these cottages is very different, actually rather daring in many - open to the sky behind high walls, completely louvred and shuttered, or as a separate shack, adjoining the cottage.
  • Most are louvred with slates to deflect the rain.


Middle English (sense 2): from Old French lover, lovier 'skylight', probably of Germanic origin and related to lodge.

For editors and proofreaders

Syllabification: lou·ver

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