English Idioms: Cash cow

English Idioms About “Animals”
Idiom: Cash cow
Meaning: This idioms refers to someone or something that generates a steady return of profits; a moneymaker. The term cash cow is a metaphor for a “dairy cow” used on farms to produce milk, offering a steady stream of income with little maintenance.
Example: 1. The typewriters production which had been their cash cow for so many years witnessed a collapse of sales. 2. The young actress turned out to be the cash cow for most Hollywood studios.