Etymology
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shutter (n.)

1540s, "one who shuts" (see shut (v.)); the meaning "movable wooden or iron frame or screen used as a cover for a window" is from 1720s (probably short for window-shutters, attested from 1680s). The photographic sense of "device for opening and closing the aperture of a lens" is from 1862.

shutter (v.)

"close with or as with a shutter," 1826, from shutter (n.). Related: Shuttered; shuttering.

updated on September 22, 2022

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Definitions of shutter from WordNet
1
shutter (n.)
a mechanical device on a camera that opens and closes to control the time of a photographic exposure;
shutter (n.)
a hinged blind for a window;
2
shutter (v.)
close with shutters;
We shuttered the window to keep the house cool
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.