/ Dictionary / Index S Screen Actors Guild: Meaning and Definition of Find definitions for: Screen' Ac"tors Guild" Pronunciation: [key] a labor union for motion-picture performers, founded in 1933. Abbr.: SAG Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. screen screen grid Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language