Lu-nëtte', n.

n. [Fr.; It. lunetta, a little moon, and an aperture for the admission of light into a concave ceiling, from Lat. & It. luna, Fr. lune, the moon.]

1. (Fort.) A detached bastion. Mahan.
2. (Far.) A half horse-shoe, which wants the sponge or that part of the branch which runs toward the quarters of the foot.
3. A kind of watch-crystal which is more than ordinarily flattened in the center; also, a species of convexo-concave lens for spectacles.
4. A piece of felt to cover the eye of a vicious horse.
5. (Arch.) An aperture for the admission of light into a concave ceiling.