six-shooter definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
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.
six-shooter definition by American Heritage Dictionary
A six-chambered revolver; a six-gun.