noun
- Eurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil.
- synonyms: Mentha pulegium
- Erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine.
- synonyms: American pennyroyal, Hedeoma pulegioides
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). pennyroyal. Retrieved September 21, 2026, from http://smartdefine.org/pennyroyal/definitions/1240909 |
| Chicago | WordNet. 2010. "pennyroyal" http://smartdefine.org/pennyroyal/definitions/1240909 (accessed September 21, 2026). |
| Harvard | WordNet 2010, pennyroyal, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/pennyroyal/definitions/1240909>. |
| MLA | WordNet. "pennyroyal" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/pennyroyal/definitions/1240909> |