/ Dictionary / Index L Lachesis: Meaning and Definition of Find definitions for: Lach•e•sis Pronunciation: (lach'u-sis), [key] — n. Class. Myth. the Fate who determines the length of the thread of life. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lachesis (Thesaurus) laches Lachine 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