sundog

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a bright spot on the parhelic circle;
caused by diffraction by ice crystals
- two or more parhelia are usually seen at once
• Syn:
parhelion, mock sun
• Derivationally related forms:
parhelic (for: parhelion)
• Hypernyms:
spot, speckle, dapple, patch, fleck, maculation