Charybdis
noun
Cha·ryb·dis 
kə-ˈrib-dəs,
also shə-,
or
chə- : a whirlpool off the coast of Sicily personified in Greek mythology as a female monster compare scylla
Did you know?
The Strait of Messina is the narrow passage between the island of Sicily and the "toe" of Italy's "boot". In Greek mythology, two monsters hovered on either side of the strait. Scylla, a female monster with six snake-like heads, each with pointed teeth, barked like a dog from the rocks on the Italian side. Charybdis, on the Sicilian side, caused a whirlpool by swallowing the waters of the sea three times a day. When Odysseus attempted to sail between them, he encountered disaster on both sides. Being caught between Scylla and Charybdis is a lot like being between a rock and a hard place.
Word History
Etymology
Latin, from Greek
First Known Use
15th century, in the meaning defined above