/ Dictionary / Index P pereirine: Meaning and Definition of Find definitions for: pe•rei•rine Pronunciation: (pu-râr'ēn), [key] — n. Chem. an alkaloid, CHON, obtained from pereira bark and formerly used as a quinine substitute. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pereira bark Perelman Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language