linebacker 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.
Football a defensive player positioned behind the defensive linemen
linebacker definition by American Heritage Dictionary
noun Football Abbr. LB
Any of the defensive players forming a second line of defense behind the ends and tackles.
- lineˈbackˌing noun