/ Dictionary / Index S South Island: Meaning and Definition of Find definitions for: South' Is'land Pronunciation: [key] the largest island of New Zealand. 860,990; 58,093 sq. mi. (150,460 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Southington South Kingstown Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language