leg: [13] Shank was the word used in Old English for ‘leg’. Not until the late 13th was leg acquired, from Old Norse leggr. It goes back to a prehistoric Germanic *lagjaz, which may ultimately come from a source that meant ‘bend’. No other Germanic language any longer uses it for ‘leg’, but Swedish and Danish retain lägg and læg respectively for ‘calf’. [leg etymology, leg origin, 英语词源]