1. aqualung - Noun
2. aqualung - Verb
a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus
Source: WordNetIn Britain the word aqualung, used for any demand-valve-controlled open-circuit scuba set, still continues to be used nowadays; in old times it was sometimes inaccurately for any scuba set including rebreathers. Source: Internet
In 1955 using an aqualung and swimming with fins, Bob Davies reached the bottom of the eleventh chamber 11 at convert depth in clear water and discovered the 12th and 13th chambers. Source: Internet