Breadcrumb Home > Dictionary > Index B bay leaf: Meaning and Definition of Find definitions for: bay' leaf" Pronunciation: [key] the dried leaf of the laurel, used in cookery. the leaf of the bayberry, Pimenta racemosa, used in making bay oil and bay rum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Bayle Bayliss ✖ Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language