<p><strong>Noun:</strong></p><ul><li>An air route equipped with emergency landing fields, beacon lights, radio beams, etc.</li><li>A passageway by which air passes from the nose or mouth to the air sacs of the lungs.</li><li>A tubelike device used to maintain adequate, unobstructed respiration, as during general anesthesia.</li><li>Any passage in a mine used for purposes of ventilation; an air course.</li><li>The band of frequencies, taken collectively, used by radio broadcasting stations: The news was sent out over the airways immediately.</li></ul>