riffle

(noun) a small wave on the surface of a liquid. Synonyms: ripple, rippling, wavelet.

(noun) shuffling by splitting the pack and interweaving the two halves at their corners.

(verb) twitch or flutter. Synonyms: flick, ruffle. Example: "The paper flicked."

(verb) look through a book or other written material. Synonyms: flick, flip, thumb, leaf, riff. Examples: "He thumbed through the report." "She leafed through the volume."

(verb) stir up (water) so as to form ripples. Synonyms: ripple, ruffle, cockle, undulate.

(verb) shuffle (playing cards) by separating the deck into two parts and riffling with the thumbs so the cards intermix.