noun (n)

• a short respite(noun.time)

  Synonym:
  breath, breathing place, breathing space, breathing spell, breathing time
  

  source: wordnet30
• air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time(noun.artifact)

  Synonym:
  schnorchel, schnorkel, snorkel, snorkel breather
  

  source: wordnet30
• One who breathes. Hence: (a) One who lives.(b) One who utters. (c) One who animates or inspires.(noun)

  source: webster1913