An act of sneezing.
To expel air as a reflex induced by an irritation in the nose.
To expel air as if the nose were irritated.
To expel or displace (air, snot, etc) from the nose or mouth by the process above.
A snorkel parka.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
To use a snorkel.