Source : WordNet®

airway
     n 1: a duct that provides ventilation (as in mines) [syn: {air
          passage}, {air duct}]
     2: a designated route followed by airplanes in flying from one
        airport to another [syn: {air lane}, {flight path}, {skyway}]
     3: a commercial enterprise that provides scheduled flights for
        passengers [syn: {airline}, {airline business}]