aqualung AK-wuh-lung noun WS #4

a portable breathing apparatus used by divers to breathe underwater, consisting of a tank of compressed air connected to a mouthpiece via a regulator

1. Early models of the aqualung were much heavier than modern equipment.
2. Before diving into the deep reef, she made sure her aqualung was fully charged with air.
3. The instructor taught us how to properly use the aqualung to ensure we could breathe easily underwater.
4. The invention of the aqualung revolutionized underwater exploration.
5. He checked the pressure gauge on his aqualung before descending.