/ Dictionary / Index C cast-iron plant: Meaning and Definition of Find definitions for: cast'-i'ron plant" Pronunciation: [key] aspidistra. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cast iron castle Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language