An Etymological Dictionary of the German Language/Tobel

by Friedrich Kluge

Tobel, m., ‘narrow valley,’ from MidHG. tobel, OHG. tobal, m., ‘forest ravine, valley’; a derivative of the Teut. root dub, dup (see Tief), to which Lith. daubà, dauburà, ‘valley,’ OSlov. duplĭ, ‘hollow,’ dĭbrĭ, ‘valley, ravine,’ are primit. cognate (Aryan root dhup, dhub).