Friedrich Kluge2506529An Etymological Dictionary of the German Language, B — Bühel1891John Francis Davis
Bühel, Bühl, m., from the equiv. MidHG. bühel, OHG. buil, buhil, m., ‘hill’; it is probably rightly referred to the Aryan root bhū̆k, bhū̆g, ‘to bend.’ See biegen and Buckel.