E. odorata

from The Collaborative International Dictionary of English v.0.48
Peppermint \Pep"per*mint\, n. [Pepper + mint.]
   1. (Bot.) An aromatic and pungent plant of the genus {Mentha}
      ({Mentha piperita}), much used in medicine and
      confectionery.
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   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.
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   3. A lozenge of sugar flavored with peppermint.
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   {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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