/ Dictionary / Index L last-born: Meaning and Definition of Find definitions for: last-born Pronunciation: (last'bôrn', läst'-), [key] — adj. last in order of birth; youngest. —n. a last-born or youngest child. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. last last-ditch Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language