/ Dictionary / Index H harlequin bug: Meaning and Definition of Find definitions for: har'lequin bug" Pronunciation: [key] a black stink bug, Murgantia histrionica, having red and yellow markings, that feeds on cabbages and other cruciferous plants. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. harlequinade harlequin duck Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language