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pennyroyal

(Science: botany) An aromatic herb (mentha Pulegium) of Europe; also, a North American plant (hedeoma pulegioides) resembling it in flavor.

(Science: botany) bastard pennyroyal See blue curls, under Blue.

Origin: A corruption of OE. Puliall royal. OE. Puliall is ultimately derived fr. L. Puleium, or pulegium regium (so called as being good against fleas), fr. Pulex a flea; and royal is a translation of L. Regium, in puleium regium.