snorkel vs vas

snorkel

• 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. 

vas

• A vessel or duct transporting any bodily fluid, such as blood, lymph, chyle, or semen. 

• The vas deferens.