Silencer

·add. ·noun One that silences;.

II. Silencer ·add. ·noun The muffler of an internal-combustion engine.

III. Silencer ·add. ·noun Any of various devices to silence the humming noise of telegraph wires.

IV. Silencer ·add. ·noun A device for silencing the report of a firearm shooting its projectiles singly, as a tubular attachment for the muzzle having circular plates that permit the passage of the projectile but impart a rotary motion to, and thus retard, the exploding gases.