Definition of storm window in English:

storm window

Line breaks: storm win¦dow

noun

chiefly North American
  • A window fixed on the outside of a normal window for protection and insulation in bad weather or winter.
    More example sentences
    • There was a small four pane window covered by a storm window at the end opposite the door.
    • The units are spaced with a 1-to 2inch gap between the storm window and existing window.
    • Like a storm window, double-glazed glass creates insulation by using an extra sheet of glass to create an air pocket.

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