noun (n)

• any new participant in some activity(noun.person)

  Synonym:
  entrant, fledgeling, fledgling, freshman, neophyte, newbie, starter
  

  source: wordnet30
• a recent arrival(noun.person)

  Example:
  He's a newcomer to Boston.
  

  source: wordnet30
• One who has lately come.(noun)

  source: webster1913