\Stein"bock`\, n. [G. stein stone + bock buck, D. bok. Cf. {Steenbok}.] (Zo["o]l.) (a) The European ibex. (b) 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}.]