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Aqua-Lung

noun [C]
 
 
/ˈæk.wə.lʌŋ/ trademark

Definition

a container of air that someone carries on their back while swimming under the surface of the water, with a tube taking air to their mouth or nose to allow them to breatheSwimming
(Definition of Aqua-Lung noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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