The car's muffler broke, and the engine noise became loud.
ピアノの消音器を使って練習する。
I practice using the piano's damper pedal.
スパイは拳銃に消音器を取り付けた。
The spy attached a silencer to the handgun.
Compound of 消音 (sound suppression) + 器 (device). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.