An Etymological Dictionary of the German Language/Annotated/locken

by Friedrich Kluge

locken, verb, ‘to curl, entice,’ from Middle High German locken, Old High German locchôn, ‘to entice, allure, decoy,’ with the equivalent variant Middle High German lücken, Old High German lucchen. Old Icelandic only has a corresponding lokka, ‘to entice.’ To these Lithuanian lugsti, ‘to beg,’ is primitively allied. Compare Luder, allied to laden.