Pronunciation: (âr'wā"),[key] —n. 1. an air route equipped with emergency landing fields, beacon lights, radio beams, etc.
2. a passageway by which air passes from the nose or mouth to the air sacs of the lungs.
3. Med.a tubelike device used to maintain adequate, unobstructed respiration, as during general anesthesia.
4. any passage in a mine used for purposes of ventilation; an air course.
5. airways, a. the band of frequencies, taken collectively, used by radio broadcasting stations: The news was sent out over the airways immediately. b. airwaves.
c. airline (def. 1c).