What is the meaning of the word "nail-tailed kangaroo"?

Definitions:

  1. A small to medium-seized marsupial found in Australia, known for the small, horny tip at the end of their tails, resembling a nail. copy to clipboard NOUN
    • The nail-tailed kangaroo is a nocturnal marsupial found in the arid regions of central and western Australia. copy to clipboard

Synonyms: