from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A faint white or yellowish arc-shaped light, similar to a rainbow, that sometimes appears in fog opposite the sun. Also called seadog.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A white arc or circle, similar to a rainbow, which can appear in the sky in foggy conditions as sunlight passes through small airborne water droplets.
from the GNU version of the Collaborative International Dictionary of English
- n. A nebulous arch, or bow, of white or yellowish light sometimes seen in fog, etc.
from The Century Dictionary and Cyclopedia
- n. A faintish white arch seen in fog, similar to the rainbow, and due to the action of the same causes, the globules of water of the fog playing the same part as the raindrops.
Sorry, no etymologies found.