milk(ing) cow

noun, a cow bred or kept for milk; a cow yielding milk (“milk cow, n.” OED)

“When you were younger, you probably had a few milk cows too, eh?”

“We stayed with the way we done things, and we got rid of the milk cows, bought some beef cows, or more or less traded for beef cattle, I guess. That’s the way we done it.”

“So you guys said you farmed this whole area. What did you farm?”
“Milk cows. And then when Tom went on the boat, we went into beef cattle.”

“My mother was still milking the cows. I think we had about 45 milking cows at the time.”

“… like people that got a few hundred head of milking cows.”