from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A luminous spot on a lunar halo.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A bright, circular spot, sometimes seen on a lunar halo, caused by refraction through ice crystals
from the GNU version of the Collaborative International Dictionary of English
- n. A mock moon; an image of the moon which sometimes appears at the point of intersection of two lunar halos. Cf. parhelion.
from The Century Dictionary and Cyclopedia
- n. A bright spot on a lunar halo, produced by refraction through a preponderating number of ice-crystals floating perpendicularly or vertically; a mock moon.
para-1 + Greek selēnē, moon.(American Heritage® Dictionary of the English Language, Fourth Edition)