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Definition of Sash window
1. Noun. A window with (usually two) sashes that slide vertically to let in air. 
Generic synonyms: Window
Definition of Sash window
1. Noun. A window consisting of two sliding panels (sashes). ¹
¹ Source: wiktionary.com
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1. Noun. A window with (usually two) sashes that slide vertically to let in air. 
1. Noun. A window consisting of two sliding panels (sashes). ¹
¹ Source: wiktionary.com