An Etymological Dictionary of the German Language/Annotated/Knöchel

by Friedrich Kluge

Knöchel, masculine, from the equivalent Middle High German knöchel, knüchel,. masculine, ‘knuckle’; diminutive of Knochen, Middle High German knoche; Anglo-Saxon cnucel, Middle English knokil, English knuckle, and the equivalent Dutch knokkel.