Breadcrumb Home > Dictionary > Index A alburnum: Meaning and Definition of Find definitions for: al•bur•num Pronunciation: (al-bûr'num), [key] — n. Bot. sapwood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Albuquerque albuterol ✖ Related Content Daily Word Quiz: guilloche Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language