Welcome,
Well that certainly is a distilled question.
Are you asking: "What is riffling?"
Rifflers are small wood rasps used to work inside lock mortises. I would think, seeing the category, that would be the answer.
Also, a misspelling of rifling.
Also, the speed-bumps in a gold sluce where the dust and nuggets hopefully accumulate.
Also, to shuffle a card deck by bringing a cut deck back together by rapidly interleaving the halves.