cash cow

US /kæʃ kaʊ/
UK /kæʃ kaʊ/
"cash cow" picture
1.

sumber pendapatan utama, mesin wang

a product or service that generates a large amount of money for a company, often with little effort or investment once established

:
Their flagship software has been a real cash cow for years.
Perisian utama mereka telah menjadi sumber pendapatan utama selama bertahun-tahun.
The old product line might not be innovative, but it's still a reliable cash cow.
Barisan produk lama mungkin tidak inovatif, tetapi ia masih merupakan sumber pendapatan yang boleh dipercayai.