water-buck
Wa"ter buck`. (Zoöl.) Defn: A large, heavy antelope (Kobus ellipsiprymnus) native of Central Africa. It frequents the banks of rivers and is a good swimmer. It has a white ring around the rump. Called also photomok, water antelope, and waterbok. Note: The name is also applied to other related species, as the leche (Kobus leche), which has similar habits.