Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Informal the use, enjoyment, etc. of something without the usual expenditure of money or effort
Used by arrangement with John Wiley & Sons, Inc.
noun SlangThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Something acquired without the ordinary effort or cost.
- free rider noun