[lu.nette] n [F, fr. OF lunete small object shaped like the moon, fr. lune moon] (ca. 1673) 1: something that has the shape of a crescent or half-moon: as a: an opening in a vault esp. for a window b: the surface at the upper part of a wall that is partly surrounded by a vault which the wall intersects and that is often filled by windows or by mural painting c: a low crescentic mound (as of sand) formed by the wind
2: the figure or shape of a crescent moon