/ Dictionary / Index I iron brick: Meaning and Definition of Find definitions for: i'ron brick" Pronunciation: [key] — Masonry. Masonry. brick having a sprinkling of dark spots caused by the presence of iron salts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ironbound ironclad Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language