noun
- A boulder that has been carried by a river to a place remote from its place of origin. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). river boulder. Retrieved September 20, 2026, from http://smartdefine.org/river_boulder/definitions/1227377 |
| Chicago | WordNet. 2010. "river boulder" http://smartdefine.org/river_boulder/definitions/1227377 (accessed September 20, 2026). |
| Harvard | WordNet 2010, river boulder, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/river_boulder/definitions/1227377>. |
| MLA | WordNet. "river boulder" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/river_boulder/definitions/1227377> |