/ Dictionary / Index N Nessus: Meaning and Definition of Find definitions for: Nes•sus Pronunciation: (nes'us), [key] — n. Class. Myth. a centaur who, on attempting to seduce Deianira, the wife of Hercules, was shot by Hercules with a poisoned arrow. Before Nessus died, he gave to Deianira the poisoned tunic that ultimately caused Hercules' death. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Nessler's reagent nest Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language