silencer

باللغة العربية: كَاتِم، كَاتِم الصَّوْت

1. An attachment to a gun that reduces the sound it emits.
2. The muffler of an internal combustion engine.
3. Any of various devices to silence the humming noise of telegraph wires.
4. Something that prevents or greatly reduces gene expression.

الجمع silencers