One who shuts or closes something.

(usually in the plural) Protective panels, usually wooden, placed over windows to block out the light.

(photography) The part of a camera, normally closed, that opens for a controlled period of time to let light in when taking a picture.

Any other opening and closing device.

(transitive) To close shutters covering.

(transitive, figurative) To close up (a building) for a prolonged period of inoccupancy.

(transitive) To cancel or terminate.