Lune (?), n. [L. luna moon: cf. F. lune. See Luna.]
Anything in the shape of a half moon.
A figure in the form of a crescent, bounded by two intersecting arcs of circles.
A fit of lunacy or madness; a period of frenzy; a crazy or unreasonable freak.
These dangerous, unsafe lunes i' the king.
© Webster 1913.