An Etymological Dictionary of the German Language/Rauch

by Friedrich Kluge

Rauch, m., from the equiv. MidHG. rouch, OHG. rauh (hh), m., ‘smoke, steam’; corresponding to OSax. rôk, m., Du. rook, AS. rêc (from Goth. *rauki), m., E. reek, OIc. reykr, m., ‘smoke’; Goth. *rauks (rauki-) is by chance not recorded. The common Teut. is connected by gradation with the Teut. root rū̆k, ‘to smoke,’ See riechen.