louver Meaning, Definition & Usage

noun one of a set of parallel slats in a door or window to admit air and reject rain
fin; louvre.

OE. lover, OF. lover, lovier; or l'ouvert the opening, fr. overt, ouvert, p. p. of ovrir, ouvrir, to open, F. ouvrir. Cf. Overt.

(Arch.) A small lantern. See Lantern, 2 (a) Written also lover, loover, lovery, and luffer. 2. same as louver boards; (b) a set of slats resembling louver boards, arranged in a vertical row and attached at each slat end to a frame inserted in a door or window; the slats may be made of wood, plastic, or metal, and the angle of inclination of the slats may be adjustable simultaneously, to allow more or less light or air into the enclosure. Louver, v. to supply with louvers; louvered doors, louvered windows