Milkmaid

A milkmaid, milk maid, milkwoman, dairymaid, or dairywoman was a girl or woman who milked cows. She also used the milk to prepare dairy products such as cream, butter, and cheese. Many large houses employed milkmaids instead of having other staff do the work. The term milkmaid is not the female equivalent of milkman in the sense of one who delivers milk to the consumer; it is the female equivalent of milkman in the sense of cowman or dairyman.

As a result of exposure to cowpox, which conveys a partial immunity to the disfiguring (and often fatal) disease smallpox, it was noticed that milkmaids lacked the scarred, pockmarked complexion common to smallpox survivors. This observation led to the development of the first vaccine.