/ Dictionary / Index E Eighth Amendment: Meaning and Definition of Find definitions for: Eighth' Amend'ment Pronunciation: [key] an amendment to the U.S. Constitution, ratified in 1791 as part of the Bill of Rights, guaranteeing reasonable bail, fines, and punishment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. eighth Eighth Commandment Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language