Air Passage — synonyms, definition
1. air passage (Noun)
2 synonyms
air duct airway
1 definition
air passage (Noun) — A duct that provides ventilation (as in mines).
1 type of
duct
8 types
Schnorkel breather register schnorchel snorkel snorkel breather upcast ventilation shaft
4 parts
blowhole vent vent-hole venthole