Meaning of Pyriphlegethon

Pyr•i•phleg•e•thon

Pronunciation: (pir"u-fleg'u-thon", -flej'-), [key]
— n. Class. Myth.
  1. Phlegethon (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.