silencer
n. countable B2 Upper Intermediate US //ˈsaɪɫənˌsɝ// UK //sˈaɪlənsɐ// si·lencer
n. a device that you attach to a gun to make the sound of the shot much quieter. It is also used to describe a part of a car that makes the engine noise less loud.
n. a device fitted to a firearm or internal combustion engine to reduce the noise of discharge or exhaust. Often used in the context of law enforcement or automotive engineering.
The police used a silencer to make the gunshots quieter.
The mechanic replaced the old silencer to reduce the loud roar of the car's engine.
While the silencer significantly dampened the acoustic signature of the weapon, it did not eliminate the muzzle flash entirely, which remained visible to the naked eye.
From silence + -er.