What is "metronomes"

Usage examples of "metronomes".

There was a boy who used no canvas, but did something with bird cages and metronomes, and another who discovered a new technique of painting: he blackened a sheet of paper and then painted with a rubber eraser.

The Ja-Gaar watched her incuriously with the cabochon jewels of their eyes, their tails swishing back and forth like the metronomes used at choir practice.

So they had gone at their subjects with metronomes, serpents, Brechtian vignettes at midnight, surgical removal of certain glands, magic-lantern hallucinations, new drugs, threats recited over hidden loudspeakers, hypnotism, clocks that ran backward, and faces.

I switched on the wipers and the blades clicked like metronomes over the glass.