Definify.com
Webster 1913 Edition
Bay rum
Bay′ rum′
.A fragrant liquid, used for cosmetic and medicinal purposes.
☞ 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.