noun
Technical term for a rotating component with vanes used in pumps, turbines, and similar machinery.
ポンプの羽根車が回転して水を吸い上げる。
The pump's impeller rotates and draws up water.
タービンの羽根車は高温高圧の蒸気で回る
The turbine runner is turned by high-temperature, high-pressure steam.