金きん穴けつ

noun

gold mine

Literal or figurative source of great wealth, like a mine that yields gold. Can refer to a business, investment, or opportunity that generates large profits.

• この新しん事じ業ぎょうはまさに金きん穴けつだ。

  This new venture is truly a gold mine.

noun

financial backer; patron; source of funds

A person or organization that provides money, like a sponsor or angel investor. Often used in contexts where someone is the main source of financial support.

• 彼かれは我われ々われのプロジェクトの金きん穴けつだ。

  He is the financial backer of our project.

noun

rich person; moneybags

A wealthy individual, often with a nuance of being a source of money for others. Can be used somewhat colloquially or jokingly.

• あの人ひとは町まち一いち番ばんの金きん穴けつだそうだ。

  I hear that person is the richest in town.