riffle

A swift, shallow part of a stream causing broken water.

A succession of small waves.

(mining) A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed. Also one of the cleats, grooves or steps in such trough.

A quick skim through the pages of a book.

The act of shuffling cards; the sound made while shuffling cards.