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
Klaos	KLAWS	Limburgish
Carolyn	KER-ə-lin, KAR-ə-lin	English
Granville	['grænvil]
Ioram	-	Biblical Latin, Biblical Greek
Baish	[beiʃ]
Rodolf	RO-dawlf (German)	German (Rare), Dutch (Rare)