Rockford 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.
city in N Ill.: pop. 150,000
Origin: in allusion to the rocky-bottomed ford there
Rockford definition by American Heritage Dictionary
A city of northern Illinois west-northwest of Chicago. Founded in 1834, it is a trade center. Population: 155,000.