The term 'Australian Runner' can be broken down into three crossword solutions: EMU (3 letters), EMUS (4 letters), and COE (3 letters). An EMU is a large, flightless bird native to Australia and the second-largest living bird by height. Emus are farmed for their meat, oil, and leather, and are also used in traditional medicine. The plural of EMU is emus. Coe is an Australian runner, Derek Coe, who won gold medals in the 1500m and 5000m at the 1982 Commonwealth Games.