/ Dictionary / Index G GI's: Meaning and Definition of Find definitions for: GI's Pronunciation: (jē'īz'), [key] — n. diarrhea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. girtline gisant 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