A bovine mammal (Bison bison) of western North America, having large forequarters, a shaggy mane, and a massive head with short curved horns; a buffalo.
An animal (B. bonasus) of Europe, similar to but somewhat smaller than the bison; a wisent.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.