boomslang

 
Pronunciation: /ˈbuːmslaŋ/

noun

  • a large, highly venomous southern African tree snake, the male of which is bright green and the female dull olive brown.
    • Dispholidus typus, family Colubridae

Origin:

late 18th century: from Afrikaans, from Dutch boom 'tree' + slang 'snake'