noun
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a supposedly radioactive substance that could be used in a bomb made from nuclear waste, widely believed to be part of a confidence trick in which gangsters sold useless material to terrorists in the early 1990s
"Collins English Dictionary — Complete & Unabridged"
2012 Digital Edition
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
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