Styx

Proper noun

Styx

1. (Greek) The river, in Hades, over which the souls of the dead are ferried by Charon.
   • A bold bad man, that dar'd to call by name / Great Gorgon, prince of darknes and dead night, / At which Cocytus quakes and Styx is put to flight.1590, Edmund Spenser, “Book I”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, →OCLC, page 13
   • For two-and-twenty years he [Doctor Guillotin], unguillotined, shall hear nothing but guillotine, see nothing but guillotine; then dying, shall through long centuries wander, as it were, a disconsolate ghost, on the wrong side of Styx and Lethe; his name like to outlive Cæsar’s.1837, Thomas Carlyle, chapter IV, in The French Revolution: A History […], volume I (The Bastille), London: Chapman and Hall, →OCLC, book IV (States-General)
2. The 5th moon of Pluto, discovered in 2012.
3. A locality in the Derwent Valley council area, south eastern Tasmania, Australia.