an African animal similar to a large cow with long curved horns.——朗文当代大辞典

Bos bubalus, originally a native of India, inhabiting most of Asia, southern Europe, and northern Africa. It is tamed in India, Italy, and elsewhere.——牛津当代大辞典

Bos caffer, the Cape Buffalo of S. Africa.——牛津当代大辞典

Applied in popular unscientific use to the American bison.——牛津当代大辞典  @en