swift-moving water flowing over rapids.
- 1905  . . . the canoe settled lower and lower, then it struck the first fast water; it lurched and plunged soggily, cleared one big wave, hovered staggering on the next crest, disappeared in the hollow beyond and came in sight no more.
- 1957  I learned how to "track" a canoe up fast water. . . .
- 1964  We . . . shot the fast water below the camp.