/ Dictionary / Index N Nicholas IV: Meaning and Definition of Find definitions for: Nicholas IV Pronunciation: [key] (Girolamo Masci) died 1292, Italian ecclesiastic: pope 1288–92. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Nicholas III Nicholas V Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language