Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Bay window \Bay" win"dow\
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(Arch.) A window forming a bay or recess in a room, and projecting outward from the wall, either in a rectangular, polygonal, or semicircular form; -- often corruptly called a bow window.
Syn: bay window, bow window, bow-window.
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a protruding abdomen. [informal]
Syn: belly, paunch, pot, potbelly, corporation, tummy.
Wiktionary
n. 1 (context architecture English) A window space projecting outward from the main walls of a building and forming a bay in a room. 2 (context figuratively English) A protruding belly.
WordNet
n. slang terms for a paunch [syn: pot, potbelly, corporation, tummy]
a window that sticks out from the outside wall of a house [syn: bow window]
Wikipedia
Usage examples of "bay window".
Hooding his pencil torch until only a finger-width beam emerged, he passed by the luggage racks till he came to the far end of the room where a bay window was set in the wall.
There was more light here, because of the big bay window that looked out into the rose garden, but that meant she was more likely to be seen if any intruder was watching.
Waterhouse joins Chattan at a bay window, where there is a view across acres of what used to be gently undulating farmland.
Behind Craig was a large bay window looking over the palace grounds, visible now in the early dawn.