What is a white, crystalline, aromatic substance resembling camphor, extracted from oil of peppermint (Mentha); -- called also mint camphor or peppermint camphor called?

menthol — A white, crystalline, aromatic substance resembling camphor, extracted from oil of peppermint (Mentha); -- called also mint camphor or peppermint camphor. (Webster's 1913.)

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