from The Century Dictionary and Cyclopedia
- n. A luminous spot in the sky due to the refraction and reflection of the moon's rays by minute ice-crystals floating in the air. See paraselene and sun-dog.
Sorry, no etymologies found.
Then they show their tokened war-shields to the moon-dog and the stars,
A pair of wolves are on their track, _Sköll_ dogging the steps of the sun, _Hati_ of the moon: they come of a giant race, the mightiest of whom, Mânagarmr (moon-dog), apparently but another name for Hati, is sure some day to _overtake and swallow the moon_. "