/ Dictionary / Index S Sills: Meaning and Definition of Find definitions for: Sills Pronunciation: (silz), [key] (Belle Silverman), born 1929, U.S. coloratura soprano and opera administrator. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sills (Thesaurus) sillimanite silly 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