Definition of "goldmines" [goldmines]

• Plural form of goldmine. (noun)

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• "Aviation watchers say 'goldmines' that Nigeria Airways is now unable to fully exploit include the Lagos-London route, the"
• "We have newspaper and television reporters advertising these as "goldmines" to would-be robbers."
• "Don't you love it when on-a-whim cookbook purchases turn out to be goldmines?"