air passage

a space occupied or traversed by air.

travel by air.

accommodations for an air trip: to book air passage for Hong Kong.

Origin of air passage

First recorded in 1830–40

Breathing through a tube, if continued for a long time, interferes with the natural growth of the air-passage above it.

A System of Operative Surgery, Volume IV (of 4) |Various
The pus may burst into the cellular tissue of the neck, or into the air-passage or the œsophagus.

Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. |Alexander Miles
These are drawn from the mouth into the air-passage during a sudden inspiratory effort, for example while laughing or sneezing.

Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. |Alexander Miles
The commonest causes are a wound of some air-passage, or a penetrating wound of the chest wall without injury to the lung.

Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 |Various

Pressure on the thoracic veins and on the air-passage causes cyanosis and dyspnœa.

Manual of Surgery |Alexis Thomson and Alexander Miles