Zimbelstern

noun

variants or less commonly Cymbelstern or Cimbelstern

plural Zimbelsterns also Cymbelsterns or Cimbelsterns

: a circular arrangement of small untuned bells usually attached to an organ that when activated ring continuously as they are struck by rotating strikers

The Zimbelstern sets into rotation a star-shaped disc attached to the central facade pipe; little bells suspended from the corners of this star are caused to tinkle by the rotating motion.

—Hans Klotz, The Organ Handbook, 1969

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