/ Dictionary / Index E eserine: Meaning and Definition of Find definitions for: es•er•ine Pronunciation: (es'u-rēn", -rin), [key] — n. Chem. physostigmine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Esenin Eshkol Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language