The Collaborative International Dictionary
Hippotragusnasomaculatus
Addax \Ad"dax\, n. [Native name.] (Zo["o]l.) One of the largest African antelopes ( Hippotragusnasomaculatus or Oryx nasomaculatus).
Note: It is now believed to be the Strepsiceros (twisted horn) of the ancients. By some it is thought to be the pygarg of the Bible.