1) Designating certain wines 2) From a German valley 3) From Bonn or Cologne 4) Like cologne and environs 5) Like Cologne and vicinity 6) Like some German wines 7) River 8) Schumann symphony 1) Hock 2) Liebfraumilch 
[format] Rhenish (Rhenisch, Rheinisch) is a newspaper format associated with the Rhineland. Rhenisch format pages measure around 350-360 mm by 510-530mm (in either a horizontal or vertical orientation). A version of Rhenish around half the size is known as `half Rhenish` or `semi-Rhenish`. ...
• (n.) Rhine wine. • (a.) Of or pertaining to the river Rhine; as, Rhenish wine.
Rhen'ish adjective [ Latin Rhenus the Rhine. ] Of or pertaining to the river Rhine; as, Rhenish wine. -- noun Rhine wine. 
[adj] - of or relating to the Rhine River and the lands adjacent to it
In the Middle Ages in England common collective name for wines from Germany and Alsace, regardless of the grape variety or exact origin.
adjective of or relating to the Rhine River and the lands adjacent to it; `Rhenish wines tend to be sweet`