/ Dictionary / Index T tarnished plant bug: Meaning and Definition of Find definitions for: tar'nished plant' bug" Pronunciation: [key] a bug, Lygus lineolaris, of the family Miridae, that is a common and widely distributed pest of alfalfa and other legumes and of peach and other fruit trees. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tarnish Tarnopol Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language