/ Dictionary / Index P plant bug: Meaning and Definition of Find definitions for: plant' bug" Pronunciation: [key] any of numerous, often brightly colored hemipterous insects of the family Miridae that feed on the juices of plants. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Plantation walking horse Plant City Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language