An Etymological Dictionary of the German Language/rauch

by Friedrich Kluge

rauch, adj., ‘rough, hairy’; equiv. to rauh; Rauchwerk, ‘furs, skins’ (MidHG. rûchwërc) contains ModHG. rauh, ‘hairy, covered with hair’; Rauchhandel (ModHG. only), ‘trade in furs, furred skins.’