milch cowmilch cow /ˈmɪltʃ kaʊ/ noun [countable] 
1something that provides a lot of money for something else: · Farmers in western Canada see themselves as a milch cow for the Eastern establishment.2a cow that is used to provide milk
1something that provides a lot of money for something else: · Farmers in western Canada see themselves as a milch cow for the Eastern establishment.2a cow that is used to provide milk