Phleg"e*thon (?), n. [L., fr. Gr. &?;, prop. p.pr. of &?; to blaze.] (Class Myth.)
One of the principal rivers of Hades, in the channel of which fire flowed instead of water.
Fierce Phlegethon,
Whose waves of torrent fire inflame with rage.
Milton.
© Webster 1913