Aqualung

Origin

Aqualung was the original name for the first open-circuit SCUBA diving equipment by and in 1943.

Full definition of aqualung

Noun

1. A piece of equipment consisting of an oxygen tank and breathing apparatus used by divers to allow them to breathe underwater at depth.

Verb

1. To scuba dive.

Usage notes

The term Aqua-Lung is a registered trademark