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Related to bay rum: bay rum tree
An aromatic liquid originally prepared by distilling the leaves of the West Indian bay tree (Pimenta racemosa) in rum and water but now usually made by mixing the oil from those leaves with other solvents.
1. (Plants) an aromatic liquid, used in medicines and cosmetics, originally obtained by distilling the leaves of the bayberry tree (Pimenta racemosa) with rum: now also synthesized from alcohol, water, and various oils
2. (Plants) bay rum tree another name for bayberry2
a fragrant liquid used chiefly as an aftershave lotion, prepared by distilling the leaves of the tropical American bay, Pimenta racemosa, with rum or by mixing oil from the leaves with alcohol, water, and other oils.