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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A sizable hidden segment of a country's economy that operates on numerous unreported private cash transactions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A sector of a nation's economy that is illegally undocumented due to cash payments or tax avoidance

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a hidden sector of the economy where private cash transactions go unreported


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