a cash cow

a business or a part of a business that always makes a lot of profit The British newspapers are the group's biggest cash cow, earning nearly 40% of group profits.

Common Names:

Name	Pronounced	Usage
Filibert	FEE-lee-bert (German)	German, Dutch, Ancient Germanic
Ursus	-	Late Roman
Osama	-	Arabic
Ingrid	['iŋgrid]
Gore	GAWR	English (Rare)
Chayyim	KHAH-yeem	Hebrew