A device designed to extract milk from animals or people. The devices use cylinders or cups placed over the teat and then uses suction to induce [[lactation]]. 

Devices designed to extract milk for a lactating woman are called "[[breast pump]]s," and may be manual or automatic.  Devices designed to extract milk from animals, particularly diary cows, are called "milking machines," and are automatic.
搾乳機 搾乳器