either of two small-leaved plants of the mint family, used in herbal medicine 薄荷,薄荷类植物
A creeping Eurasian plant (Mentha pulegium), and American pennyroyal (Hedeoma pulegioides), family Labiatae 欧亚薄荷,唇萼薄荷(拉丁名Mentha pulegium)和穗花薄荷(拉丁名Hedeoma pulegioides),唇形科
语源
mid 16th cent.: from Anglo-Norman French puliol (based on Latin pulegium 'thyme') + real 'royal'