money bag
/ˈmʌnɪ baɡ/noun
1A bag for holding money. Also in plural ( humorous ): wealth.
2 Informal (occasionally derogatory ). A person characterized as having or desiring money; a wealthy person. Also of a group of people, a country, etc. Frequently in plural (usually as money-bags or moneybags) with singular concord and sense.
3 Cookery (chiefly British ). A filled pastry parcel in which the edges of a thin piece of pastry are gathered together around a filling so as to resemble a bag of money.
Origin
Mid 16th century; earliest use found in Southampton Probate Inventories. From money + bag.