What is "kobus leche"

Water buck \Wa"ter buck`\ (Zo["o]l.) 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.