/ Dictionary / Index B bay rum tree: Meaning and Definition of Find definitions for: bay' rum' tree" Pronunciation: [key] bay (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bay rum bay salt Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language