Bay window, window framed as the outside articulation of a straight inside a construction, a cove in this setting being an inside break made by the outward projection of a wall. The reason for an inlet window is to concede more light than would a window flush with the wall line.Bay window, window framed as the outside articulation of a straight inside a construction, a cove in this setting being an inside break made by the outward projection of a wall. The reason for an inlet window is to concede more light than would a window flush with the wall line. Bay window might be rectangular, polygonal, or curve molded. On the off chance that the last, it could be known as a bow window. There has been a proceeding with disarray among inlet and bow windows. Bay window is the more seasoned term and has turned into the nonexclusive structure. Bay window is likewise called an oriel, or oriel window, when it projects from an upper story and is upheld by corbels.