lune

noun

1. (obsolete)A fit of lunacy or madness; a period of frenzy; a crazy or unreasonable freak.

   “Why woman, your husband is in his olde Lunes againe: […]”

   “Theſe dangerous, vnſafe Lunes i'th' King, beſhrew them: / He muſt be told on't, and he ſhall[…]”

   “A mad world this, my friends, a world in its lunes, petty and other; in lunes other than petty now for some time; in petty-lunes, pettilettes, or pantalettes, about these six weeks, ever since when this rampant androgynous Bloomerism first came over from Yankee land.”

2. A concave figure formed by the intersection of the arcs of two circles on a plane, or on a sphere the intersection between two great semicircles.

   “What he worried about was any eventual convexity, a shrinking, it might be, of the planet itself to some palpable curvature of whatever he would be standing on, so that he would be left sticking out like a projected radius, unsheltered and reeling across the empty lunes of his tiny sphere.”

3. Anything crescent-shaped.
4. A leash for a hawk.

   “And thenne was he ware of a Faucon came fleynge ouer his hede toward an hyghe elme / and longe lunys aboute her feet / and she flewe vnto the elme to take her perche / the lunys ouer cast aboute a bough / And whanne she wold haue taken her flyghte / she henge by the legges fast / and syre launcelot sawe how he henge”