Other forms: riffles, riffled
To riffle is to turn pages quickly with the thumb. Riffle through a book, riffling the pages, riffle the cards.
It is looking rather than reading, so riffling through a report finds nothing much. A riffle shuffle is the card shuffle where two halves are sprung together. In a river a riffle is a shallow patch of broken water. Note rifle through, which is a different word meaning to search and rob.
1verbriffleTo turn pages quickly with the thumb.
“He riffled through the pages of the book, looking for his bookmark.”
riffle is a quick turning.
Probably a variant of ruffle, related to Low German ruffelen, to crumple.
Middle English
ruffelen
English, today
riffle
Possible alteration of ruffle, from Middle English ruffelen, akin to Low German ruffelen (“to crumple”).
Etymology from Wiktionary, CC BY-SA