Any of several more or less arboreal marsupials somewhat resembling martens

Wiktionary Word definitions in Wiktionary
n. Any of various Australasian carnivorous marsupials, of the family Dasyuridae, which include the marsupial equivalent to cats

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
dasyure \das"y*ure\ (d[a^]s"[i^]*[=u]r), n. [Gr. dasy`s thick, shaggy + o'yra` tail: cf. F. dasyure.] (Zo["o]l.) A carnivorous catlike marsupial quadruped of Australia, belonging to the genus Dasyurus , called also native cat . There are several species. ...

WordNet Word definitions in WordNet
n. any of several more or less arboreal marsupials somewhat resembling martens