From Longman Dictionary of Contemporary Englishwhitewaterwhite‧wa‧ter, white water /ˌwaɪtˈwɔːtə◂ $ -ˈwɒːtər◂, -ˈwɑː-/ noun [uncountable] DNa part of a river that looks white because the water is running very quickly over rocks whitewater canoeing
Examples from the Corpus
whitewater• whitewater rafting• And on this day, it meant canoeing through sieges of whitewater.• We got too deep into the whitewater, skimmed a hidden back eddy, and were spun around 180 degrees.• But here on the Tatshenshini they cautiously skirted the edges of the whitewater, seeking the most prudent line. 