/ Dictionary / Index L labdanum: Meaning and Definition of Find definitions for: lab•da•num Pronunciation: (lab'du-num), [key] — n. a resinous juice that exudes from various rockroses of the genus Cistus: used in perfumery, fumigating substances, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: labdanum (Thesaurus) labarum Labe Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language