Gallipoli (gulip'ulē) [key]or Gelibolu (gelē'bōlOO") [key], city (1990 pop. 18,670), W Turkey, a port at the east end of the Dardanelles, near the neck of the Gallipoli Peninsula. It has long been a strategic point in the defense of Istanbul (Constantinople) and has numerous historic remains. It was captured by the Ottoman Turks in 1354.