aqualung

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a device (trade name Aqua-Lung) that lets divers breathe under water;
scuba is an acronym for self-contained underwater breathing apparatus
• Syn:
Aqua-Lung, scuba
• Usage Domain:
trademark (for: Aqua-Lung)
• Hypernyms:
breathing device, breathing apparatus, breathing machine, ventilator
• Part Meronyms:
cylinder, oxygen mask