noun Classical Mythology.
- 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.
- Greek myth a centaur that killed Hercules. A garment dipped in its blood fatally poisoned Hercules, who had been given it by Deianira who thought it was a love charm