/ Dictionary / Index V venin: Meaning and Definition of Find definitions for: ven•in Pronunciation: (ven'in, vē'nin), [key] — n. Biochem. any of several poisonous substances occurring in snake venom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Venice venipuncture Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language