overfall
/ˈəʊvəfɔːl/noun
1- a turbulent stretch of open water caused by a strong current or tide over a submarine ridge, or by a meeting of currents湍流; 逆流碎波。
1.1
- a place where surplus water overflows from a dam, weir, or pool漫水坝, 溢流坝; 溢洪道。