/ Dictionary / Index G great gross: Meaning and Definition of Find definitions for: great' gross' Pronunciation: [key] a unit of quantity equivalent to 12 gross. Abbr.: GGR Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. great gray owl great guns 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