noun (n)

• a vast multitude(noun.group)

  Synonym:
  host, legion
  

  source: wordnet30
• a nomadic community(noun.group)

  source: wordnet30
• a moving crowd(noun.group)

  Synonym:
  drove, swarm
  

  source: wordnet30
• A wandering troop or gang; especially, a clan or tribe of a nomadic people migrating from place to place for the sake of pasturage, plunder, etc.; a predatory multitude.(noun)

  source: webster1913