An Etymological Dictionary of the German Language/Planke

by Friedrich Kluge

Planke, f., ‘plank, board,’ from MidHG. planke, blanke, f., ‘thick board, plank, fortification’; corresponding to Du. and E. plank; borrowed in the MidHG. period from the equiv. Rom. and MidLat. planca; comp. Fr. planche, Ital. (Pied.) pianca.