bay rum definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- bayberry (sense )
- an aromatic liquid formerly obtained from leaves of the bayberry tree, now made of certain oils, water, and alcohol: it is used in medicines and cosmetics
bay rum definition by American Heritage Dictionary
An aromatic liquid originally prepared by distilling the leaves of the bay rum tree in rum and water but now usually made by mixing the oil from those leaves with other solvents.