riffle /ˈɹɪfəl/verb 7noun 7forms 3 verb7 •To skim or flick through the pages of a book. •To leaf through rapidly. •To shuffle playing cards by separating the deck in two and sliding the thumbs along the edges of the cards to mix the two parts. •To flow over a swift, shallow part of a stream. •To ruffle with a rippling action. •To idly manipulate objects with the fingers. •To prepare samples of material using a riffler. noun7 •A swift, shallow part of a stream causing broken water.They then proceeded below the milldam, where there was a strong riffle, with likely looking pools and eddies — 1903 •A succession of small waves. •A quick skim through the pages of a book. •Synonym of riffle shuffle •The sound made while shuffling cards. •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. •In seal engraving, a small metal disc at the end of a tool. formsriffled · riffling · riffles