Mid 19th century; earliest use found in Andrew Smith (1797–1872), army medical officer and naturalist. From South African Dutch waterbok from Dutch water + bok.
Definition of waterbok in US English:
waterbok
(also waterbock)
nounˈwɔːtəbɒk
South African
The waterbuck, Kobus ellipsiprymnus.
Origin
Mid 19th century; earliest use found in Andrew Smith (1797–1872), army medical officer and naturalist. From South African Dutch waterbok from Dutch water + bok.