bay window

American  

noun

1. an alcove of a room, projecting from an outside wall and having its own windows, especially one having its own foundations.

2. Informal. a large, protruding belly; paunch.

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bay window British  

noun

1. Sometimes shortened to: bay.  a window projecting from the wall of a building and forming an alcove of a room See also bow window oriel window

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Etymology

Origin of bay window

late Middle English word dating back to 1400–50

Example Sentences

The front bay window appeared to have been completely blown out, with debris including plants, wooden shutters and glass scattered across the street.

From BBC • Jun. 17, 2025

Adding further drama is a giant bay window in the living room that overlooks the backyard.

From Los Angeles Times • Feb. 26, 2024

By March 5, Mr. Rice noticed the bay window in his living room was cracking from the weight of the snow.

From New York Times • Mar. 15, 2023

Relatively few people are old enough to recall this unpretentious 1906 home, with charming third-floor gables and a second-floor bay window.

From Seattle Times • Mar. 3, 2022

It’s raining outside, yes, but it’s also raining inside, where an eastern white pine has smashed through Axel’s bay window.

From "A Bird Will Soar" by Alison Green Myers