Any of several large bears of the genus Ursus, such as the grizzly and Kodiak bears, inhabiting western North America and northern Eurasia and having brown to yellowish fur. Brown bears are sometimes categorized as the single species U. arctos.
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.