koala/kəuˈɑ:lə; ko`ɑlə/ n(also koala bear) Australian tree-climbing mammal with thick grey fur, large ears and no tail 树袋熊（产於澳洲的树栖哺乳动物, 毛密、 色灰、 耳大、 无尾）.
牛津英汉双解词典