/ Dictionary / Index G gross-out: Meaning and Definition of Find definitions for: gross-out Pronunciation: (grōs'out"), [key] — n. Slang. something that is disgustingly offensive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gross-out (Thesaurus) gross national product gross profit 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