noun
- A purgative extracted from the seed of the castor-oil plant; used in paint and varnish as well as medically. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). castor oil. Retrieved September 22, 2026, from http://smartdefine.org/castor_oil/definitions/1322725 |
| Chicago | WordNet. 2010. "castor oil" http://smartdefine.org/castor_oil/definitions/1322725 (accessed September 22, 2026). |
| Harvard | WordNet 2010, castor oil, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/castor_oil/definitions/1322725>. |
| MLA | WordNet. "castor oil" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/castor_oil/definitions/1322725> |