air passage
noun
plural air passages
Definition of air passage
: a channel or part through which air passes
It takes an extra shot of fuel right into the carburetor air passage to give an engine a burst of power when the accelerator pedal is depressed quickly. — Popular Science
specifically
: an anatomical part (such as the pharynx and bronchial tubes) involved in respiration
Pertussis is a bacterial infection of the air passages leading to the lungs … — Jane E. Brody While asthma was once defined purely as intermittent, reversible spasms of the air passages in the lungs, its underlying cause is now known to be chronic inflammation of those airways … — Judy Packer-Tursman