/ Dictionary / Index H Hadrian's Wall: Meaning and Definition of Find definitions for: Ha'drian's Wall' Pronunciation: [key] a wall of defense for the Roman province of Britain, constructed by Hadrian between Solway Firth and the mouth of the Tyne. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hadrian VI hadron Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language