snorkel breather

Từ điển WordNet v3.1 - WordNet Dictionary

noun

air passage provided by a retractable device containing intake and exhaust pipes;
permits a submarine to stay submerged for extended periods of time
• Syn:
snorkel, schnorkel, schnorchel, breather
• Derivationally related forms:
breathe (for: breather)
• Hypernyms:
air passage, air duct, airway
• Part Holonyms:
submarine, pigboat, sub, U-boat