stingray

from WordNet (r) 3.0 (2006)

stingray
    n 1: large venomous ray with large barbed spines near the base
         of a thin whiplike tail capable of inflicting severe wounds

from The Collaborative International Dictionary of English v.0.48

Sting ray \Sting ray\ or Stingray \Sting"ray`\, n.
   Any one of numerous rays of the family {Dasyatidae}, syn.
   {Trygonidae}, having one or more large sharp barbed dorsal
   spines, on the whiplike tail, capable of inflicting severe
   wounds. Some species reach a large size, and some, esp., on
   the American Pacific coast, are very destructive to oysters.
   [Webster 1913 Suppl.]