/ˈsaɪlənsə(r) ||; ˈsaɪlənsɚ/(
US 美
muffler)
noun [C]
1 a device which is fixed to the long tube under a vehicle(exhaust pipe)to reduce the noise made by the engine （车辆的）排气消声器，排气消音器 ☞picture at motorbike 见motorbike插图
2 the part of a gun that reduces the noise when it is fired （枪的）消音器