lunette
Pronunciation:
/ljuːˈnɛt//luːˈnɛt/noun
Definitions
A small opening in a vaulted roof of a circular or crescent shape.
A crescent-shaped recess or void in the space above a window or door.
An image or other representation of a crescent moon.
(fortifications) A field work consisting of two projecting faces forming a wedge each of which extends from one of two parallel flanks.