noun (n)

• someone who leads a wandering unsettled life(noun.person)

  Synonym:
  bird of passage, roamer, wanderer
  

  source: wordnet30
• an adult member of the Boy Scouts movement(noun.person)

  Synonym:
  scouter
  

  source: wordnet30
• One who practices robbery on the seas; a pirate.(noun)

  source: webster1913