oil of peppermint
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oil of peppermint[′ȯil əv ′pep·ər·mənt]
Colorless or slightly yellow essential oil with minty aroma and taste; soluble in ether, alcohol, and chloroform; derived from leaves and flowering tops of the peppermint plant (Mentha piperita); has high menthol content; used in medicines, flavors, perfumes, and liqueurs. Also known as peppermint oil.