fool’s gold
noun/ˌfuːlz ˈɡəʊld/
/ˌfuːlz ˈɡəʊld/
[uncountable]- a yellow mineral found in rock, which looks like gold but is not valuable, also called iron pyrites see also pyrites
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- something that you think is valuable or will earn you a lot of money, but which has no chance of succeedingTopics Difficulty and failurec2
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fool’s gold