Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Informal a revolver having a cylinder that holds six cartridges; specif., such a revolver with a long barrel and of relatively large caliber of the kind usually used in the western U.S. in the last half of the 19th cent.
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A six-chambered revolver; a six-gun.