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Longman Dictionary of Contemporary English
control tower
noun
EXAMPLES FROM CORPUS
▪ A window also was blown out of the control tower.
▪ Birkwood Lock, the first mechanized lock with control tower and traffic light gantry.
▪ He practiced landings on Sunday, then told the control tower that he would fly for another hour.
▪ Meanwhile, up in Duxford's control tower, John Allison was anxiously waiting.
▪ Soon, Rob would take S-Sugar on to the runway and wait for clearance from the control tower.
▪ The control tower staff saw the aircraft making a sharp left-hand climbing turn before it disappeared into thick low cloud.
▪ The quake shattered windows in the control tower at Seattle-Tacoma International Airport and forced the airport's immediate closure.
Wiktionary
control tower

n. 1 (context aviation English) An airport building from which the air traffic control unit monitors and directs the movement of aircraft on and around the airport. 2 An enclosed, raised structure occupied by one or more persons who operate or exercise control over railway traffic, ship movement, a racetrack, machinery, etc.

WordNet
control tower

n. a tower with an elevated workspace enclosed in glass for the visual observation of aircraft around an airport

Usage examples of "control tower".

The generator, apparently hastefully installed at the side of what had once been an airfield control tower, gave one last wheeze as a stanchion collapsed.

This looked slightly like a small airfield control tower, two storeys high with a glass-walled room at the top.

Blake ran up to the control tower to warn the B-17s that were due in and he eventually managed to land them safely.

The control tower demanded to know who had overridden the instructions.