/ Dictionary / Index P plaster cast: Meaning and Definition of Find definitions for: plas'ter cast' Pronunciation: [key] any piece of sculpture reproduced in plaster of Paris. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plasterboard plastered Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language