An Etymological Dictionary of the German Language/Annotated/Riffel
Appearance
Riffel, Rüffel, neuter, ‘flax-comb, ripple; censure,’ probably allied to Middle High German riffeln, rifeln, ‘to comb or hatchel flax,’ riffel, ‘mattock,’ Old High German riffila, ‘saw.’ German has similar figurative terms for ‘to find fault with, inveigh against’ (similar to etwas durchecheln, ‘to censure’). Compare reffen.