Pep·per·mint n.
 1. Bot. An aromatic and pungent plant of the genus Mentha (Mentha piperita), much used in medicine and confectionery.
 2. A volatile oil (oil of peppermint) distilled from the fresh herb; also, a well-known essence or spirit (essence of peppermint) obtained from it.
 3. A lozenge of sugar flavored with peppermint.
 Peppermint camphor. Chem. Same as Menthol.
 Peppermint tree Bot., a name given to several Australian species of gum tree (Eucalyptus amygdalina, Eucalyptus piperita, E. odorata, etc.) which have hard and durable wood, and yield an essential oil.

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