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Noun: pennyroyal  ,pe-nee'roy-ul
  1. Eurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil
    - Mentha pulegium
  2. Erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
    - American pennyroyal, Hedeoma pulegioides

Derived forms: pennyroyals

Type of: herb, herbaceous plant, mint

Part of: genus Hedeoma, Hedeoma

Encyclopedia: Pennyroyal, Victoria