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nounEurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil
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nounerect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
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Definition that contains pennyroyal
- hedeoma oil aromatic oil from American pennyroyal
- pennyroyal oil aromatic oil from American pennyroyal
- genus hedeoma small genus of American herbs (American pennyroyal)
- pennyroyal oil oil from European pennyroyal having an odor like mint; used chiefly in soaps
- hedeoma small genus of American herbs (American pennyroyal)