bison: Meaning and Definition of

bi•son

1. Also calleda North American, oxlike ruminant, Bison bison, having a large head and high, humped shoulders: formerly common in North America, its small remaining population in isolated western areas of the U.S. and Canada is now protected.
2. Also calleda related animal, Bison bonasus, of Europe, less shaggy and slightly larger than the American bison: now greatly reduced in number.