-nsə(r) noun
( -s )
: one that silences: as
a. : a device that when applied to exhaust or suction lines absorbs or silences the sound waves which produce undesirable noises
b. chiefly Britain : the muffler of an internal-combusion engine
c. : a silencing device for small arms that permits the exit of the projectile but reduces the noise without materially impeding the escape of the exploding gases
d. : a device for silencing or reducing noise
door silencer