[lou.ver] or lou.vre n [ME lover, fr. MF lovier] (14c) 1: a roof lantern or turret often with slatted apertures for escape of smoke or admission of light in a medieval building
2. a: 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 b: a finned or vaned device for controlling a flow of air or the radiation of light c: a fin or shutter of a louver -- lou.vered also lou.vred adj