Source : WordNet®

snorkel
     n 1: 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
     2: air passage provided by a retractable device containing
        intake and exhaust pipes; permits a submarine to stay
        submerged for extended periods of time [syn: {schnorkel},
        {schnorchel}, {snorkel breather}, {breather}]
     v : dive with a snorkel