/ Dictionary / Index S St. Peter's Square: Meaning and Definition of Find definitions for: St. Peter's Square Pronunciation: [key] a square surrounded by colonnades, forming a boundary of and an entrance to Vatican City, leading to St. Peter's: designed by Giovanni Bernini and built during the 17th century. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. St. Petersburg St. Pierre 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