sundog
nounA small halo, sometimes resembling part of a rainbow, near the horizon just off the parhelic circle.
A mock sun, or parhelion.
A luminous spot occasionally seen a few degrees from the sun, supposed to be formed by the intersection of two or more halos, or in a manner similar to that of halos.
A fragmentary rainbow; a small rainbow near the horizon; -- called also dog and weathergaw.
Alternative spelling of sun dog.
