noun (n)

• a globular cloud(noun.object)

  Synonym:
  cumulus cloud
  

  source: wordnet30
• a collection of objects laid on top of each other(noun.group)

  Synonym:
  agglomerate, cumulation, heap, mound, pile
  

  source: wordnet30
• One of the four principal forms of clouds. SeeCloud.(noun)

  source: webster1913