Three Sisters(redirected from Three Sisters (disambiguation))
Three volcanic peaks in the Cascade Range of west-central Oregon. The highest rises to 3,157 m (10,358 ft).
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.