wallarooEnglishOxford Dictionary of Englishwallaroo /ˌwɒləˈruː / ▸ noun a large stocky kangaroo found in hilly country in Australia. Genus Macropus, family Macropodidae: two species, in particular the common wallaroo (M. robustus)(also called euro1). – ORIGIN early 19th century: from Dharuk walaru.