potorooPronunciation: /ˌpɒtəˈruː/Definition of potoroo noun a small nocturnal rat-kangaroo with long hindlimbs and typically a hopping gait, native to Australia. Genus Potorous, family Potoroidae: three species Origin: late 18th century: probably from Dharuk badarupotoroo in other Oxford dictionaries Definition of potoroo in the US English dictionary