Gallipoli /ɡəˈlɪpəli/ noun3 •A peninsula in Turkey, north of the Dardanelles, between the Aegean and Marmara seas. •(old-fashioned) Synonym of Gelibolu: a town and municipality of Turkey, located on the Gallipoli peninsula. •[before a noun] A town in Lecce, Apulia, Italy.