The definition of a play on words is the clever or witty use of language such that the language itself becomes funny or humorous or interesting.noun
An example of a play on words is a pun.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
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play on words - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A word or turn of phrase with a double meaning, a pun or other humorous use of language. For example, Shakespeare was a master at plays on words—his dramas are full of puns. [First half of 1700s]