Shutter (noun)

A device for closing and opening a window, or a door.

Origin:

The word "shutter" comes from the old english word "scyttere" and it means a device for closing and opening a window, or a door.

Examples:

1. She closed the window shutters to keep out the bright sunlight.
2. The shutter on the camera controls the amount of light that enters the lens.
3. He installed new shutters on the windows of his house.
4. She opened the shutters to let fresh air in.
5. The shutter on the old camera was broken.