The Collaborative International Dictionary
Luna \Lu"na\, n. [L.; akin to lucere to shine. See Light, n., and cf. Lune.]
The moon.
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(Alchemy) Silver.
Luna cornea (Old Chem.), horn silver, or fused silver chloride, a tough, brown, translucent mass; -- so called from its resemblance to horn.
Luna moth (Zo["o]l.), 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.
Wikipedia
The luna moth (Actias luna) is a lime-green, Nearctic Saturniid moth in the family Saturniidae, subfamily Saturniinae. It has a wingspan of up to , making it one of the largest moths in North America.