Wash·burn(wŏsh′bûrn′, wôsh′-), Bradford 1910-2007.
American mountaineer and cartographer noted for his innovations in aerial photography and for his detailed maps of the Grand Canyon (1975-1981) and Mt. Everest (1988).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.