zapper
noun [ C ] informal uk/ˈzæp.ər/ us/ˈzæp.ɚ/
遥控器
a device for controlling a machine from a distance
Use the zapper to turn off the TV. 用遥控器关掉电视。
电灭（虫等）器
a device that kills or gets rid of something, especially by using electricity
a fly zapper 电灭蝇器