/ Dictionary / Index G greenboard: Meaning and Definition of Find definitions for: green•board Pronunciation: (grēn'bôrd", -bōrd"), [key] — n. a green chalkboard or blackboard. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Greenberg greenbottle fly 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