marsupial mouse

noun

1. any of various mouse-sized to rat-sized marsupials of the family Dasyuridae, occurring in Australia, New Guinea, and Tasmania: some species are rare or endangered.
2. the mouselike crested-tailed Dasycercus cristicauda of Australian deserts.

marsupial mouse

noun

1. any mouselike insectivorous marsupial of the subfamily Phascogalinae: family Dasyuridae