Nessus

Nessus can have a number of meanings:

Nessus (mythology), a famous centaur from Greek mythology
The Tunic or Shirt of Nessus, the poisoned shirt of the centaur Nessus, in the story of Hercules
Nessus, an alternate name of Nestos (god), son of Oceanus and Tethys, and god of the river Nestos
Nessus (software), a computer security tool.
NESSUS Probabilistic Analysis Software, a computer-based probabilistic analysis tool for assessing uncertainties in structural and mechanical systems.
Nessus (Pierson's Puppeteer), an alien character in Larry Niven's Known Space books, of the species Pierson's Puppeteer
7066 Nessus, a Centaur planetoid
Nessus, a fictional metropolis in Gene Wolfe's The Book of the New Sun, staggering in both its size and age
Nessus, a layer of Hell in Dungeons & Dragons

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