Kokytos

English Etymology en grc Κωκῡτός. Proper noun ~ en Cocytus. en 1974 Covington Scott Littleton Hades The World Book Encyclopedia 9 (H) Chicago, Ill. Field Enterprises Educational Corporation 4 https://archive.org/details/worldbookencycloh09fiel/page/4/mode/1up 2 0-7166-0074-9 The Greeks believed that Hades was beneath the earth. It had five rivers—the Acheron, the Kokytos, the Lethe, the Pyriphlegethon, and the Styx. Each served as a boundary between the land of the living and the land of the dead.