SUNDOG
- bright circular spot on a solar halo; mock sun: usually one of two or more such spots seen on opposite sides of the sun, and often accompanied by additional luminous arcs and bands
- small or incomplete rainbow
- parhelion
- small nearly round halo on the parhelic circle most frequently just outside the halo of 22 degrees
- a small rainbow (an arc of spectral colours formed in the sky) [n -S]
- a small rainbow [n SUNDOGS]
- a bright circular spot on a solar halo; parhelion.