/ Dictionary / Index P plastic bomb: Meaning and Definition of Find definitions for: plas'tic bomb' Pronunciation: [key] a bomb made of plastic explosive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plastic art plastic explosive Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language