storm window

noun

1. a supplementary window sash for protecting a window against drafts, driving rain, etc.

storm window

noun

1. an additional window fitted to the outside of an ordinary window to provide insulation against wind, cold, rain, etc
2. a type of dormer window

Word History and Origins

Origin of storm window¹

First recorded in 1885–90

Example Sentences

If you swap out screens for storm windows that gives an extra pane of glass to provide protection from the cold winter air.

From Washington Blade

There was no curtain, and the blind had not been drawn down, therefore the earth looked in at the storm-window.

From Project Gutenberg

Have you ever peeped up at the eaves above the little storm-window where you are so fond of sitting?

From Project Gutenberg

The room had a storm-window, of which the lattice stood open.

From Project Gutenberg