Lune
Lune (lūn) , noun
[Latin luna moon: compare French lune. See Luna.]
1.
Anything in the shape of a half moon. [Rare]
2.
(Geometry) A figure in the form of a crescent, bounded by two intersecting arcs of circles.
3.
A fit of lunacy or madness; a period of frenzy; a crazy or unreasonable freak. [Obsolete]
These dangerous, unsafe lunes i' the king.