noun
erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
• Syn: ↑pennyroyal, ↑American pennyroyal
• Hypernyms: ↑herb, ↑herbaceous plant
• Member Holonyms: ↑Hedeoma, ↑genus Hedeoma
• Substance Meronyms: ↑pennyroyal oil, ↑hedeoma oil
Useful english dictionary. 2012.