Definition of pennyroyal
1 : a European perennial mint (Mentha pulegium) with small aromatic leaves
2 : an aromatic North American mint (Hedeoma pulegioides) that has blue or violet flowers borne in axillary tufts and yields an oil used in folk medicine or to drive away mosquitoes
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Origin and Etymology of pennyroyal
probably alteration of Anglo-French puliol real, from puliol pennyroyal (ultimately from Latin puleium) + real royal
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See words that rhyme with pennyroyal Britannica.com: Encyclopedia article about pennyroyal
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