Lūne, n.

n. [Lat. luna, moon; Fr. lune. See LUNA.]

1. Any thing in the shape of a half moon. [Rare.]
2. (Geom.) A figure in the form of a crescent, bounded by two intersecting arcs of circles.
3. A fit of lunacy or madness, or a freak. [Obs.]

“These dangerous, unsafe lunes of th’ king.” Shak. 4. [M. H. Ger. line, N. H. Ger. leine, line, rope, leam, slip.] A leash; as, the lune of a hawk.