Yamato /jɑˈmɑtoʊ/ noun3 •A member of the ethnic group that comprises over 90% of the population of Japan, native to the islands of Honshu, Shikoku, and Kyushu.When the Guptas were ruling in India and the Tang were ruling in China and the Yamatos were ruling in Japan, no one was ruling in Australia! The people of Australia were nomads. — 2007 •One of a class of battleships used by the Imperial Japanese Navy during the Second World War. •A member of the Yamato court which formerly ruled Japan. formsYamatos