Airway (noun)

1. A passage for air to enter and leave the lungs.
2. A route for air traffic.
3. A tube inserted into a person's windpipe to help them breathe.

Origin:

Late 19th century: from air + way.

Examples:

1. The patient's airway was blocked by the swelling.
2. The airway was cleared with a suction device.
3. The airway from New York to London is one of the busiest in the world.
4. The airway was established to help him breathe.
5. The airway was secured to prevent further collapse.