laugh track 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.
recorded laughter, applause, etc. added to a soundtrack, as of a TV program, to simulate the responses of a studio audience
laugh track definition by American Heritage Dictionary
Recorded laughter added to a soundtrack, as of a television or radio show.