- a cow that is raised for its milk rather than for beef.
- Informal. a source of easily gained income; profitable venture: The new subsidiary turns out to be a real milk cow.
Origin of milk cow
late Middle English word dating back to 1400–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for milk cow
If it be a milk-cow, the lacteal secretion is diminished, and the udder is hot and tender.The American Reformed Cattle Doctor
On his way he overtook a boy, a little fellow of eight or nine, driving a milk-cow ahead of him.Under Handicap
But one often reads of a milk-cow, so I supposed there must be some cows that are all for cream, if some are for milk.Great Uncle Hoot-Toot