Breadcrumb Home > Dictionary > Index G Cite greenback: Meaning and Definition of Find definitions for: green•back Pronunciation: (grēn'bak"), [key] — n. a U.S. legal-tender note, printed in green on the back since the Civil War, originally issued against the credit of the country and not against gold or silver on deposit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: greenback (Thesaurus) Greenaway green-backed heron TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News The Holocaust (1933–1945) Chinese New Year History, Meaning, and Celebrations Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: obviate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language