ドル箱ばこ

noun

cash cow; gold mine; source of funds

Figurative expression for a person, product, or business that reliably generates a lot of money. Often used in business or entertainment contexts.

• あのアイドルグループは事じ務む所しょのドル箱ばこだ。

  That idol group is the agency's cash cow.

• この商しょう品ひんは会かい社しゃにとってドル箱ばこになっている。

  This product has become a gold mine for the company.

noun

cash box; safe

Literal meaning: a box or safe for storing money. Less common than the figurative sense.

• 店てん長ちょうは売うり上あげ金きんをドル箱ばこに入いれて金きん庫こにしまった。

  The store manager put the day's earnings into the cash box and locked it in the safe.