signal tower
signal box BrE

Built a magazine and a signal tower 80 feet high.

Two men were approaching the station, coming from the lower signal tower.

A steel ladder led aloft to the door of the signal tower.

At last they reached the first of a long series of signal towers.

"Perhaps when we destroyed some of the French signal towers?"

The only pieces of equipment that seemed to be used with any regularity were the signal towers.

Have you got anything we could use on the signal towers?

They closed the restaurant and went down the busy street while there was still light in the sky, guiding themselves by the signal tower.

The place was called by everyone throughout the city the signal tower.

The second story had three bedrooms and the signal tower.