/ Dictionary / Index H Haymarket Square: Meaning and Definition of Find definitions for: Hay'market Square' Pronunciation: [key] a square in Chicago: scene of a riotin 1886 between police and labor unionists. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Haymarket haymow Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language