The southern peninsula of Greece, joined to central Greece by the Isthmus of Corinth (11)
I believe the answer is:
peloponnese
(Another definition for peloponnese that I've seen is " Part of Greece".)
I've seen this clue in The Independent.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.