emu
noun [ C ] uk/ˈiː.mjuː/ us/ˈiː.mjuː/ emu or emus
（产于澳大利亚的）鸸鹋
a large Australian bird with a long neck and grey or brown feathers. Emus cannot fly but have long legs and can run quickly.
Emus grow to almost two metres and can run at nearly 50 kph. 鸸鹋可以长到差不多两米高，奔跑时速几乎可达50公里。