Dictionary.com
definitions

storm window

|
SEE MORE SYNONYMS FOR storm window ON THESAURUS.COM

noun

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

Origin of storm window

First recorded in 1885–90
Also called storm sash.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for storm window

Historical Examples of storm window

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

    David Elginbrod

    George MacDonald

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

    Robert Falconer

    George MacDonald

British Dictionary definitions for storm window

storm window

noun

an additional window fitted to the outside of an ordinary window to provide insulation against wind, cold, rain, etc
a type of dormer window
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012