Peloponnesus, Peloponnese, Peloponesos A large peninsula and region in southern Greece, forming the part of the country south of the Gulf of Corinth. No evidence could be found linking the pelo in Peloponnesus with the pelo meaning 'mud' as shown in this unit. The peninsula has been inhabited since prehistoric times. Its modern name derives from ... Found on http://www.wordinfo.info/words/index/info/view_unit/1390/