/ Dictionary / Index L leu: Meaning and Definition of Find definitions for: le•u Pronunciation: (le'oo), [key] — pl. lei a coin and monetary unit of Rumania, equal to 100 bani. Abbr.: L. Leu Pronunciation: [key] — Biochem. Biochem. leucine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: leu (Thesaurus) Letzeburgesch leuc- Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language