A set of angled slats or flat strips in a window, door, or the like, designed to allow air or light to pass through while keeping out rain or direct sunlight.
The louver on the window helped keep the room cool by allowing air to circulate while blocking the harsh sunlight.
A structure on a roof or the top of a building that allows ventilation while preventing rain from entering.
The old factory had a large louver on the roof to help ventilate the heat generated by the machinery inside.
An individual slat in a louvered assembly.
One of the louvers was missing, so rain leaked through the opening.
louververb
To equip or supply (a window, door, etc.) with louvers.
They decided to louver the side windows to improve airflow.