Searching quickly through something by turning pages or moving things around; also, the spiral grooves in a gun barrel.
From French 'rifler' (to scratch or groove). The firearm meaning comes from the spiral grooves cut into gun barrels in the 15th century; the search meaning evolved later.
Those spiral grooves in rifles make bullets spin like footballs for accuracy—the same principle makes frisbees fly straight, showing how military technology and playground games share physics.
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