Definition of "redback" in English

noun

1. (Australia) A venomous spider, Latrodectus hasselti, endemic to Australia.

   • 1988 June 16, Stephanie Pain, Things that go plop in the night, New Scientist, page 78, “If you find a redback, squash it firmly,” advised one guide.
   • 2005 October, Martha Harrison, Brilliant 10: Marydianne Andrade, Popular Science, page 58, Andrade first encountered the redback— whose lethal bite gives it as infamous a reputation in Australia as the black widow enjoys here in North America—when her grad-school adviser asked to travel to go to Perth to study them.

2. (US) A brown and white sandpiper (Calidris alpina), native to the Northern Hemisphere; the dunlin.

noun

1. (slang) the yuan (CNY), the currency of the People's Republic of China (Red Chinese money)