/ Dictionary / Index M malleable cast iron: Meaning and Definition of Find definitions for: mal'leable cast' i'ron Pronunciation: [key] white cast iron that has been malleablized. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. malleable malleable iron Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language