/ Dictionary / Index G glutes: Meaning and Definition of Find definitions for: glu•tes Pronunciation: (gl'tēz), [key] — n.pl. Informal. the muscles of the buttocks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: glutes (Thesaurus) glutenous glutethimide Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language