shutter

Noun

• One who shuts or closes something.
• Protective panels, usually wooden, placed over windows to block out the light.
• The part of a camera, normally closed, that opens for a controlled period of time to let light in when taking a picture.

Verb

• To close shutters covering.
• To close up (a building) for a prolonged period of inoccupancy.
• To cancel or terminate.