sliding storm shutter; exterior window shutter
Refers to protective shutters, often sliding panels, fitted outside windows or doors to guard against rain, wind, storms, cold, or for security at night.
We closed the storm shutters in preparation for the typhoon.
When I opened the storm shutters in the morning, the room became bright.
I closed the storm shutters before the typhoon arrived.
It was morning, so I opened the storm shutters.
Many houses put up the storm shutters when night falls.