Dämpfer

A mute is a device fitted to a musical instrument to alter the sound produced: by affecting the timbre, reducing the volume, or most commonly both.
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n. steamer, steamship; pressure cooker, special pot used to steam foods

n. damper, device that regulates the draft in a stove or fireplace; muffler, device which deadens the noise of an automobile engine; device which reduces the intensity of sound in a musical instrument

m damper
shock absorber