or Aq·ua Lung

[ ak-wuh-luhng, ah-kwuh- ]

  1. 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. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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.

    The Wailing Octopus | Harold Leland Goodwin
  • They launched floats, placed aqualung mouthpieces on top of their masks, and swam parallel to the beach.

    The Wailing Octopus | Harold Leland Goodwin
  • Replacing aqualung tubes with snorkels, they swam on the surface, faces down, alert for sharks.

    The Wailing Octopus | Harold Leland Goodwin

British Dictionary definitions for aqualung


/ (ˈækwəˌlʌŋ) /

  1. 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