/ Dictionary / Index P pirogen: Meaning and Definition of Find definitions for: pi•ro•gen Pronunciation: (pi-rō'gun), [key] — n. small baked pastries filled with chopped chicken livers, onion, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. piro pirogue Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language