Dictionary.net

• Oryx Gazella, the name given to a splendid variety of the antelope, inhabiting the open plains of South Africa, having somewhat the appearance of a horse, with remarkably fine, straight, sharp-pointed horns, with which it is said to foil even the lion.

1899 - The american dictionary of the english language.
By Daniel Lyons

• n. [German] A species of the antelope found in South Africa.

1871 - The Cabinet Dictionary of the English Language