An Etymological Dictionary of the German Language/Ellenbogen
Appearance
Ellenbogen, Ellbogen, m., from the equiv. MidHG. ęllenboge, ęlenboge, OHG. ęlinbogo, m., ‘elbow.’ Comp. Du. elleboog, AS. ęlnboga, m., E. elbow, OIc. ǫlnboge, m., ‘elbow,’ lit. ‘bend of the arm.’