n :  any of a family (Labiatae, the mint family) of aromatic plants with a square stem and a four-lobed ovary which produces four one-seeded nutlets in fruit : esp  :  any of the genus Mentha of mints (as the spearmint, M. spicata the peppermints, M. piperita and M. arvensis and the European pennyroyal M. pulegium) .
 
 
 
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