Luna

n.
  1. The moon.
  2. (Alchemy) Silver.
    3. Luna cornea (Old Chem.),
    horn silver, or fused silver chloride, a tough, brown, translucent mass; -- so called from its resemblance to horn.
    Luna moth (Zoöl.),
    a very large and beautiful American moth (Actias luna). Its wings are delicate light green, with a stripe of purple along the front edge of the anterior wings, the other margins being edged with pale yellow. Each wing has a lunate spot surrounded by rings of light yellow, blue, and black. The caterpillar commonly feeds on the hickory, sassafras, and maple.