Open English Wordnet
Nouns
(n)pennyroyal, Mentha pulegiumEurasian perennial mint have small lilac-blue flowers and ovate leaves; yields an aromatic oil
(n)pennyroyal, American pennyroyal, Hedeoma pulegioideserect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
