/ Dictionary / Index S Silla Kingdom: Meaning and Definition of Find definitions for: Sil'la King"dom Pronunciation: (sil'u), [key] an ancient Korean state that unified Korea; flourished in the 7th–10th centuriesa.d. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sillabub Sillanpää Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language