A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
A snorkel parka.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
To use a snorkel.
A device for smoking, such as a hookah or bong, in which the smoke is drawn through a container of water before inhaling.
A pipe that is a conduit for water; an essential element of plumbing.