It was the distant drone of an airplane engine.

They heard the distant drone of a plane.

The plague was a far distant drone in Richard's mind and body, yet this all seemed a dream, too.

Subconsciously his hearing had picked up the distant drone of an engine.

The noise in the lobby, so distinct a moment ago, became a distant drone.

There was the distant drone of an alarm and things began to thaw.

All about, the forest grew silent, and even the distant drone of the falls faded and was gone.

"It's why the place is so cheap," Janet said after the noise had waned to a distant drone.

Soon afterward, he heard the distant drone of the airplane.

And when the sound of its engine had dropped to a distant drone, I knew I was right.