potoroo Syllabification: (po·to·roo)Pronunciation: /ˌpätəˈro͞o/Definition of potoroo noun a small, nocturnal rat kangaroo with long hind limbs and typically a hopping gait, native to Australia and Tasmania. Genus Potorous, family Potoroidae: three species Origin: late 18th century: probably from Dharuk badarupotoroo in other Oxford dictionaries Definition of potoroo in the British & World English dictionary