noun
- The two promontories at the eastern end of the Strait of Gibraltar; according to legend they were formed by Hercules. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Pillars of Hercules. Retrieved September 21, 2026, from http://smartdefine.org/pillars_of_hercules/definitions/1227301 |
| Chicago | WordNet. 2010. "Pillars of Hercules" http://smartdefine.org/pillars_of_hercules/definitions/1227301 (accessed September 21, 2026). |
| Harvard | WordNet 2010, Pillars of Hercules, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/pillars_of_hercules/definitions/1227301>. |
| MLA | WordNet. "Pillars of Hercules" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/pillars_of_hercules/definitions/1227301> |