/ Dictionary / Index L lionhearted: Meaning and Definition of Find definitions for: li•on•heart•ed Pronunciation: (lī'un-här"tid), [key] — adj. exceptionally courageous or brave. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lionhearted (Thesaurus) lionheart lionize 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