Definition of nail-tailed wallaby in English:

nail-tailed wallaby

noun

  • Any of several rare, brightly-marked wallabies of the genus Onychogalea, which rotate their forelimbs when hopping and have a horny spur at the tip of the tail.

Origin

Mid 19th century; earliest use found in John Gould (1804–1881), ornithologist and publisher.