Peloponnese
the island of Pelops
Today this word meansThe great peninsula of southern Greece — home to Sparta, Mycenae, and Olympia.
Pelops + nēsos (island): "the island of Pelops."
Joined to the mainland only by the Isthmus of Corinth, it was reckoned an island in antiquity — and when the canal was cut in 1893, it actually became one.