/ Dictionary / Index G Guinevere: Meaning and Definition of Find definitions for: Guin•e•vere Pronunciation: (gwin'u-vēr"), [key] — n. wife of King Arthur and mistress of Lancelot. a female given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: guinevere (Thesaurus) guinea worm Guinness Related Content Daily Word Quiz: loquacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language