'Potoroo' definitions:

Definition of 'potoroo'

noun

Australian rat kangaroos

From: GCIDE

Potoroo \Po`to*roo"\, n. (Zool.) Any small kangaroo belonging to Hypsiprymnus, Bettongia, and allied genera, native of Australia and Tasmania. Called also kangaroo rat. [1913 Webster]

From: GCIDE

kangaroo rat \kangaroo rat\ n. (Zool.) A jumping rodent of the genus Dipodomys of the family Heteromyidae, which lives in arid regions of Mexico and the western U. S. [PJC]
2. (Zool.) An Australian mammal of the genus Notomys. [PJC]
3. (Zool.) a small ratlike Australian kangaroo of the genus Potorous, also called the potoroo. [PJC]