a brand of underwater breathing apparatus for a swimmer or skin-diver, consisting of a cylinder of compressed air that is strapped to the back, a flexible tube connecting the cylinder with the swimmer's mouth, and an automatic pressure regulator that controls the flow of air into the lungs.
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How to use Aqua-Lung in a sentence
He was suddenly impatient to get going, to put on his aqualung and explore the reef from top to bottom.
They launched floats, placed aqualung mouthpieces on top of their masks, and swam parallel to the beach.
Replacing aqualung tubes with snorkels, they swam on the surface, faces down, alert for sharks.
British Dictionary definitions for aqualung
breathing apparatus used by divers, etc, consisting of a mouthpiece attached to air cylinders strapped to the back
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012