from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A monoterpenoid ketone, found in pennyroyal, that is toxic to dogs and cats
from The Century Dictionary and Cyclopedia
- n. An oily unsaturated ketone related to the terpenes, , found in the oils of Spanish and American pennyroyal (Mentha Pulegium and Hedeoma pulegioides), etc. It has an odor resembling peppermint.
Sorry, no etymologies found.