SNORKEL
snorkel, schnorkel, schnorchel, snorkel breather, breather
(noun) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
snorkel
(noun) 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
snorkel
(verb) dive with a snorkel
Source: WordNet® 3.1
Etymology
Noun
snorkel (plural snorkels)
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
Synonym: snort
Verb
snorkel (third-person singular simple present snorkels, present participle (US) snorkeling or (UK) snorkelling, simple past and past participle (US) snorkeled or (UK) snorkelled)
To use a snorkel.
Source: Wiktionary