shutter

(shŭtˈər)

1. One that shuts, as:
   a. A hinged cover or screen for a window, usually fitted with louvers.
   b. A mechanical device of a camera that controls the duration of a photographic exposure, as by opening and closing to allow light coming through the lens to expose a plate or film.
2. shutters Music The movable louvers on a pipe organ, controlled by pedals, that open and close the swell box.

1. To furnish or close with shutters: locked the doors and shuttered the windows.
2. To cause to cease operations; close down: shuttered the store for the holiday.