bay rum

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bay rum,

aromatic liquid used chiefly as a cosmetic and a perfume. It originated in the West Indies, where it was prepared by distillation from rum and bay leaves. It is now commonly a mixture of oil of bay (from a bayberry), alcohol, water, oil of pimento, and oil of orange peel.
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bay rum

[¦bā ′rəm]
(materials)
A product originally prepared from the distillation of rum and water mixed with bayberry (Pimenta acris) leaves but now made from a mixture of bay oil, orange oil, pimenta oil, alcohol, and water; used in shaving lotions and alcohol rubs.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

bay rum

1. 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. bay rum tree another name for bayberry
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005