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pay dirt

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noun
soil, gravel, or ore that can be mined profitably.
Informal. any source of success or wealth; a fortunate discovery or profitable venture: After months of experimentation, the scientists finally hit pay dirt.
Football. end zone (def. 1).
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Origin of pay dirt

An Americanism dating back to 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for pay dirt

pay dirt

noun
a deposit rich enough in minerals to be worth mining
strike pay dirt or hit pay dirt informal to achieve one's objective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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