Sash window

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

A sash window or hung sash window is made of one or more movable panels, or "sashes". The individual sashes are traditionally paned windows, but can now contain an individual sheet (or sheets, in the case of double glazing) of glass.

Excerpt from the Wikipedia article “Sash window”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Daniel Case, CC BY-SA 3.0, via Wikimedia Commons.