( NAmE usually lou·ver ) / ˈluːvə(r); NAmE / noun
one of a set of narrow strips of wood, plastic, etc. in a door or a window that are designed to let air and some light in, but to keep out strong light or rain; a door or a window that has these strips across it
► louvred ( NAmE usually lou·vered ) adjective
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WORD ORIGIN
Middle English (originally meaning a rough structure incorporating openings to let out smoke): from Old French lover , lovier skylight, probably of Germanic origin and related to lodge .