ETYM Old Eng. lover, Old Fren. lover, lovier; or l'ouvert the opening, from overt, ouvert, p. p. of ovrir, ouvrir, to open, French ouvrir. Related to Overt.
One of a set of parallel slats in a door or window to admit air and reject rain; SYN. louvre, fin.
Sloping slat placed across an opening