kerf

From Middle English kerf, kirf, kyrf, from Old English cyrf (“an act of cutting, a cutting off; a cutting instrument”), from Proto-West Germanic *kurbi, from Proto-Germanic *kurbiz (“a cut; notch; clipping”), from Proto-Indo-European *gerbʰ- (“to scratch”). Cognate with Saterland Frisian Käärf, West Frisian kerf, Swedish korv. Related also to Dutch kerf, German Low German Karve, Karv, German Kerbe.