What is the meaning of Snorkel?

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.

A snorkel parka.

To use a snorkel.

A snorkel (swimming gear, breathing tube).

to snorkel (to dive using a breathing tube)

snorkel (swimming gear, breathing tube)

submarine snorkel, snort

snorkel (hollow tube used for breathing underwater)

snorkel

snorkelling

snorkel

Source: wiktionary.org