silencer

noun

1. Something that silences or (notionally) nearly silences.

   “The Justice Department has defended the law for decades, arguing that it doesn’t ban silencers but simply governs how a buyer can acquire one. Still, late last week, prosecutors requested a 30-day pause in the criminal case against a firearms dealer found with an unregistered silencer because “the Department of Justice is re-evaluating its litigation positions regarding silencers.””

2. Something that silences or (notionally) nearly silences.

   “Before the fitting of silencers to these locomotives was completed by the end of 1961, they were very noisy in operation, but the effect of the silencer has been remarkable.”

3. Something that silences or (notionally) nearly silences.
4. Something that silences or (notionally) nearly silences.