A window built to project outward from an outside wall.
A hinged window is called a casement window.
The crossbeam of a window is called a transom.
The eyes are the window.
Full length of the roof line is called a Dutch Dormer.
Window glass is called a pane or a light.
A round window in the hull (originally any opening in the hull) is called a porthole. A window in the superstructure is a window.
window alcove
A "window".
A crescent-shaped window is called a Lunette.
The window in a ceiling or roof is called a Skylight.
A crescent-shaped window is called a Lunette.