air passage

Noun
  1. A duct that provides ventilation (as in mines) (synset 102693800)
    is a type of: duct - an enclosed conduit for a fluid
    subtypes:
    • register - an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room
    • breather, schnorchel, schnorkel, snorkel, snorkel breather - air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
    • upcast - air passage consisting of a ventilation shaft through which air leaves a mine
    • ventilation shaft - a shaft in a building; serves as an air passage for ventilation
    has: blowhole, vent, vent-hole, venthole - a hole for the escape of gas or air
    same as: air duct, airway

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