/ Dictionary / Index L lamentation: Meaning and Definition of Find definitions for: lam•en•ta•tion Pronunciation: (lam"un-tā'shun), [key] — n. the act of lamenting or expressing grief. a lament. a book of the Bible, traditionally ascribed to Jeremiah. Abbr.: Lam. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lamentation (Thesaurus) lamentable lamented 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