white water
noun /ˌwaɪt ˈwɔːtə(r)/
/ˌwaɪt ˈwɔːtər/
[uncountable]- a part of a river that looks white because the water is moving very fast over rocks
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- a stretch of white water
- white-water rafting
- a part of the sea or ocean that looks white because it is very rough and the waves are high