An Etymological Dictionary of the German Language/Annotated/Rausch

by Friedrich Kluge

Rausch (1.), masculine, ‘cranberry,’ from Middle High German rûsch, rusch, feminine, ‘rush,’ from Latin ruscum, whence also Dutch rusch, masculine, ‘rush,’ Anglo-Saxon rŷsče, feminine, English rush; see Risch and Rusch.

Rausch (2.), masculine, ‘carouse, rush, roar,’ Modern High German only (corresponding in Middle High German to rûsch, masculine, ‘onset, attack’; see rauschen); its relation to Low German roes, ‘intoxication,’ English rouse, Old Icelandic rúss, ‘drunkenness,’ is still obscure. The Modern High German word has certainly been borrowed.