bay rum
  頭髮用的一種香水
  Bay rum A fragrant liquid, used for cosmetic and medicinal purposes.
  Note: ☞ The original bay rum, from the West Indies, is prepared, it is believed, by distillation from the leaves of the bayberry (Myrcia acris). The bay rum of the Pharmacopœia (spirit of myrcia) is prepared from oil of myrcia (bayberry), oil of orange peel, oil of pimento, alcohol, and water.
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  bay rum
       n : an aromatic liquid originally obtained by distilling the
           leaves of the bayberry tree with rum