honshu(n = noun.location) hondo - the central and largest of the four main islands of Japan; between the Sea of Japan and the Pacific Ocean; regarded as the Japanese mainland;
is a kind of island
is a part of japan, japanese archipelago, japanese islands
has parts: capital of japan, edo, japanese capital, tokio, tokyo, yeddo, yedo, nagano, nagoya, omiya, osaka, yokohama, kobe, kyoto, hiroshima, toyohashi, toyonaki, toyota, asama, mount asama

   the main island of Japan. Together with the islands of Hokkaido, Kyushu and Shikoku it forms the bulk of the land area of Japan. [WordNet 1.5]