| 1. | an alcove of a room, projecting from an outside wall and having its own windows, esp. one having its own foundations. Compare bow window, oriel. |
| 2. | Informal. a large, protruding belly; paunch. |

| bay window n.
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bay window
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bay window
window formed as the exterior expression of a bay within a structure, a bay in this context being an interior recess made by the outward projection of a wall. The purpose of a bay window is to admit more light than would a window flush with the wall line
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