conˈtrol ˌtower noun [countable] a tall building at an airport from which people direct the movement of aircraft on the ground and in the air
[TahlilGaran] Dictionary of Contemporary English ▲
control tower n. A tower with large windows and a good view of an airport so that the traffic of airplanes can be seen and controlled, usually by radio.
We could see the lights at the control tower as our plane landed during the night. [TahlilGaran] English Idioms Dictionary ▲