airline
nounUK /ˈeəlaɪn/
US /ˈerlaɪn/
A company that flies people or things in airplanes.
My aunt works for an airline and travels all over the world.
OTHER MEANINGS
2. A route or system of routes used by airplanes.
This airline connects the island to the mainland.
3. A tube that carries air, such as in a breathing machine.
The diver's airline brought fresh air from the surface.
4. A hose or pipe that supplies air to a machine or diver.
Check the airline for leaks before using the pump.