/ Dictionary / Index G Gretna: Meaning and Definition of Find definitions for: Gret•na Pronunciation: (gret'nu), [key] — n. a city in SE Louisiana, near New Orleans. 20,615. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gretchen Gretna Green Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language