noun
dairy; milk shop; milkman
Refers to a shop that sells milk and dairy products, or the person who delivers milk. The context determines whether it means the shop or the person.
近所の牛乳屋で新鮮な牛乳を買った。
I bought fresh milk at the neighborhood dairy.
毎朝、牛乳屋が玄関まで牛乳を届けてくれる
Every morning, the milkman delivers milk to our doorstep.