Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
money paid in full at the time of a business transaction
Used by arrangement with John Wiley & Sons, Inc.
noun InformalThe 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.
Money readily at hand.
cold cash - 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.
Also, hard cash. Actual currency (bills and coins); money immediately available, paid at the time of a purchase. For example, Will you lower the price if I pay in cold cash instead of using a credit card? or We have only a limited amount of hard cash—the rest is in accounts receivable. [First half of 1900s]