silencer
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/ˈsaɪlənsər/
🇬🇧
/ˈsaɪlənsə(r)/
A part added to a vehicle's exhaust to make it quieter.
The mechanic installed a silencer on the car to make it quieter.
A part added to the end of a gun to make it quieter when fired.
The spy used a silencer on his gun to avoid detection.