/ Dictionary / Index G ground plan: Meaning and Definition of Find definitions for: ground' plan" Pronunciation: [key] the plan of a floor of a building. first or fundamental plan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ground pink ground plane Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language