[1] : The Collaborative International Dictionary of English v.0.48

sundog \sun"dog`\, n. meteorol.
   1. 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.
      1913 webster

   2. a fragmentary rainbow; a small rainbow near the horizon;
      -- called also dog and weathergaw.
      webster 1913 suppl.
see also:
dog weathergaw 

Weathergaw >> W Words
Weathergaw, definition of term: Weathergaw
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