snorkel
noun B1- A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater. · They wore snorkels while exploring the coral reef.· She used a snorkel to breathe while swimming 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.
Plural snorkels
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