- noun a hinged door which controls the flow of air
Cars & Driving
- noun the curved metal vane of a Hall generator
- A movable cover or screen used to cover an opening, especially a window opening.
- noun a mechanical part of a camera that opens and closes the lens aperture to expose the film or plate to light
- noun a hinged external cover for a door or window, often with louvres and usually fitted in pairs
- verb to close or protect something by means of shutters