Deianira  (dē-ya-nī´ra ).—Daughter of Œneus and wife of Hercules. She was beloved by the river god Achelous and by Hercules; but Hercules overcame his opponent in a fight for her, and obtained her as his wife. She accidentally killed her husband by giving him a poisoned garment to wear, and on seeing what she had done hanged herself (see “Hercules”).