1. Air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
   "The submarine raised its schnorkel to replenish its air supply";
   - snorkel, schnorchel, snorkel breather, breather

Derived forms: schnorkels

Type of: air duct, air passage, airway

Part of: pigboat [informal], sub [informal], submarine

Encyclopedia: Schnorkel