snorkel

Noun

• air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time

• breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water

Verb

• dive with a snorkel

Related words

• Synonyms: 
  schnorkel , schnorchel , snorkel breather , breather