1. something that produces a lot of money or profit
2. a person who earns or generates a lot of money

Examples

• The new smartphone became the company’s biggest moneymaker.
• That restaurant is a real moneymaker for the owner.
• The bestselling novel was an unexpected moneymaker.
• She’s the main moneymaker in her family.
• The parking lot turned out to be a steady moneymaker.
• His investment in tech stocks made him quite a moneymaker.
• The franchise proved to be a reliable moneymaker for years.