noun
- A tributary of the Rhine.
- synonyms: Ruhr River
- A major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany.
- synonyms: Ruhr Valley
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). ruhr. Retrieved September 26, 2026, from http://smartdefine.org/ruhr/definitions/1324224 |
| Chicago | WordNet. 2010. "ruhr" http://smartdefine.org/ruhr/definitions/1324224 (accessed September 26, 2026). |
| Harvard | WordNet 2010, ruhr, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/ruhr/definitions/1324224>. |
| MLA | WordNet. "ruhr" 23 October 2010. Web. 26 September 2026. <http://smartdefine.org/ruhr/definitions/1324224> |