The Collaborative International Dictionary of English v.0.48:

Whipparee \Whip`pa*ree"\, n. (Zool.)
   (a) A large sting ray (Dasybatis Sayi, or Trygon Sayi)
       native of the Southern United States. It is destitute of
       large spines on the body and tail.
   (b) A large sting ray (Rhinoptera bonasus, or Rhinoptera
       quadriloba) of the Atlantic coast of the United States.
       Its snout appears to be four-lobed when viewed in front,
       whence it is also called cow-nosed ray.
       [1913 Webster]

WordNet (r) 3.0 (2006):

Rhinoptera bonasus
    n 1: large ray found along eastern coast of North America [syn:
         cownose ray, cow-nosed ray, Rhinoptera bonasus]