Ruhr

Ruhr, an affluent of the Rhine, which joins it at Ruhrort after a course of 142 m.; navigable to craft conveying the product of the coal-mines to the Rhine.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Rügen * Rule of Faith
Ruby
Rückert, Friedrich
Ruddiman, Thomas
Rudolf I.
Rudolf II.
Rudolf Lake
Rudra
Rugby
Ruge, Arnold
Rügen
Ruhr
Rule of Faith
Rum
Rumford, Count
Rump, The
Runcorn
Runeberg, Johan Ludwig
Runes
Runnimede
Rupee
Rupert, Prince