/ Dictionary / Index S set-top: Meaning and Definition of Find definitions for: set'-top" Pronunciation: [key] designed to sit atop a television and serve as a link to interactive communications systems: set-top boxes that allow viewers to order movies on demand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. set-to Setúbal 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