pachinko 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.
a Japanese gambling game played on a device like a vertical pinball machine
Origin: Japanese pachinko, slingshot, pinball machine, hand gun, and the like : of echoic origin, originally : use for vertical pinball machine largely after World War II
pachinko definition by American Heritage Dictionary
A Japanese gambling game played on a vertical pinball machine.