A series of sloping boards or metal strips, or some similar contrivance, to break the force of wind without being an obstruction to the passage of air or sound, as in a louver or chimney cowl.
1. Louvers that are placed in an exterior wall opening to permit light and air to enter, but break the wind.
2. A sloping roof.
3. In the French Vernacular architecture of New Orleans, an extension of a roof over a sidewalk.