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Definition of American pennyroyal
1. Noun. Erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine.
Exact synonyms: Hedeoma Pulegioides, Pennyroyal
Generic synonyms: Herb, Herbaceous Plant
Group relationships: Genus Hedeoma, Hedeoma
Terms within: Hedeoma Oil, Pennyroyal Oil
Generic synonyms: Herb, Herbaceous Plant
Group relationships: Genus Hedeoma, Hedeoma
Terms within: Hedeoma Oil, Pennyroyal Oil