/ Dictionary / Index L laburnum: Meaning and Definition of Find definitions for: la•bur•num Pronunciation: (lu-bûr'num), [key] — n. any of several small trees belonging to the genus Laburnum, of the legume family, having elongated clusters of pendulous yellow flowers, esp. L. alpinum, the Scotch laburnum. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: laburnum (Thesaurus) Labuan labyrinth Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language