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storm window

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noun
a supplementary window sash for protecting a window against drafts, driving rain, etc.
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Also called storm sash .

Origin of storm window

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use storm window in a sentence

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
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