The American Heritage® Dictionary of the English Language, 4th Edition
n. A breathing apparatus used by swimmers and skin divers, consisting of a long tube held in the mouth.
n. A retractable vertical tube in a diesel-engine submarine that contains air-intake and exhaust pipes for the engines and for ventilation, permitting extended periods of submergence at periscope depth.
n. A hollow tube, held in the mouth, used by swimmers for breathing underwater.
n. A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
v. To use a snorkel.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
v. dive with a snorkel
n. breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
Word Usage
"The scuba mask has to be made of tempered glass and has to fit my face, the fins have to be scuba fins (sturdier, broader from what I understand) and the snorkel is nothing special, but theyjust want you to use your own."