WordReference Random House Unabridged Dictionary of American English © 2020
death ad′der, 
  • Reptileseither of two highly venomous elapid snakes of the genus Acanthophis, of Australia and New Guinea, having a stout body and broad head.
    • 1855–60

    Collins Concise English Dictionary © HarperCollins Publishers::
    death adder n
    1. a venomous Australian elapid snake, Acanthophis antarcticus, resembling an adder
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