noun (n)

• an official stationed at the entrance of a courtroom or legislative chamber(noun.person)

  Synonym:
  usher
  

  source: wordnet30
• the lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church(noun.person)

  Synonym:
  ostiarius, ostiary
  

  source: wordnet30
• someone who guards an entrance(noun.person)

  Synonym:
  door guard, doorman, gatekeeper, hall porter, ostiary, porter
  

  source: wordnet30
• One who guards the entrance of a house or apartment; a porter; a janitor.(noun)

  source: webster1913