A blue lamp used to be the sign of a police station.

When he turned off the light, they glowed like little blue lamps.

A soft whisper above the blue lamp told that fact.

Ahead, the police car, blue lamp still flashing, was parked by the side of the road.

But she was smiling, and her eyes were deep violet under the glow from the soft blue lamp.

The blue lamps flickered, went dark and then brightened again.

Most police stations can easily be identified from one or more blue lamps located outside the entrance, which were introduced in 1861.

The dull blue lamp hardly lightened the darkness at all.

Notice the stone building with the two cupolas and the blue lamps?

He giggled suddenly, his eyes burning like blue lamps from the pills he'd popped.