plunger

🇬🇧/ˈplʌndʒə(r)/ 🇺🇸/ˈplʌndʒər/ 58
A plunger is a device for clearing waste pipes. It consists of a rubber cup on the end of a stick which you press down several times over the end of the pipe. (疏通管道用的)搋子

noun [专属名词][机] 活塞;潜水者;跳水者;莽撞的人

He has to push down hard on the plunger, and the process is slow. 他不得不用力推挤针管,这个过程非常慢。

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