In a high building, a stairway protected by several inches of concrete and entered through a kind of "air lock" that prevents smoke from entering in the event of a fire.

Synonym of watchtower

A lookout tower to search for fires in a forest.

In a high building, a stairway protected by several inches of concrete and entered through a kind of "air lock" that prevents the poluted smoke to enter inside it.

plural of lookout tower

plural of radio tower

(aviation) An airport building from which the air traffic control unit monitors and directs the movement of aircraft on and around the airport.

A bascule bridge in London crossing the River Thames, built in the late 19th century

plural of roller towel

plural of Martello tower