noun (n)

• a dark grey cloud bearing rain(noun.object)

  Synonym:
  nimbus cloud, rain cloud
  

  source: wordnet30
• an indication of radiant light drawn around the head of a saint(noun.attribute)

  Synonym:
  aura, aureole, gloriole, glory, halo
  

  source: wordnet30
• A circle, or disk, or any indication of radiant light around the heads of divinities, saints, and sovereigns, upon medals, pictures, etc.; a halo. See Aureola, and Glory, n., 5.(noun)

  source: webster1913