0 a brand name for a container of air that you carry on your back while swimming under the surface of the water, with a tube taking air to your mouth or nose to allow you to breathe --
The Aqua-Lung was a tank of air with a mask that allowed divers complete freedom of movement.
Diving suits were the most popular and useful form of diving until the invention in 1945 of the Aqua-Lung by the French engineer Emile Gagnan and the French underwater explorer Jacques Cousteau.
