louver
Arrangement of parallel, horizontal blades or slats of glass, wood, or other material designed to regulate airflow or light penetration. Louvers are often used in windows or doors to allow air or light in while keeping the elements out. They may be either movable or fixed. The term also refers to metal blades covering the intake and exhaust outlets of ventilation and air-conditioning units.
louvre (US), louver
1.
a. any of a set of horizontal parallel slats in a door or window, sloping outwards to throw off rain and admit air
b. the slats together with the frame supporting them
2. Architect a lantern or turret that allows smoke to escape
louver [′lü·vər]
(building construction)
An opening in a wall or ceiling with slanted or sloping slats to allow sunlight and ventilation and exclude rain; may be fixed or adjustable, and may be at the opening of a ventilating duct. Also known as outlet ventilator.
(engineering)
Any arrangement of fixed or adjustable slatlike openings to provide ventilation.
(engineering acoustics)
An arrangement of concentric or parallel slats or equivalent grille members used to conceal and protect a loudspeaker while allowing sound waves to pass.
louver
Louis XVI style
1. An assembly of sloping, overlapping blades or slats; may be fixed or adjustable; designed to admit air and/or light in varying degrees and to exclude rain and snow; esp. used in doors, windows, and the intake and discharge of mechanical ventilation systems.
2. A dome or turret rising from the roof of the hall of a medieval English residence, originally open at the sides to
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