shutter (v.) Look up shutter at Dictionary.com
1826, from shutter (n.). Related: Shuttered; shuttering.
shutter (n.) Look up shutter at Dictionary.com
1540s, "one who shuts" (see shut (v.)); meaning "movable wooden or iron screen for a window" is from 1680s. Photographic sense of "device for opening and closing the aperture of a lens" is from 1862.