What is "stonebuck"

Steinbock \Stein"bock`\, n. [G. stein stone + bock buck, D. bok. Cf. Steenbok.] (Zo["o]l.)

1. The European ibex.

2. A small South African antelope ( Nanotragus tragulus) which frequents dry, rocky districts; -- called also steenbok. [Written also steinboc, and steinbok; also called stonebock, and stonebuck.]

n. (alternative form of steinbock English)