Milk containers are vessels used to store and transport milk. UDDERS, with 6 letters, are the natural containers of cows and other animals that produce milk. JUGS, with 4 letters, are typically made of glass or plastic and are used to store and pour milk. Pails, with 5 letters, are usually made of metal or plastic and are used to transport milk. Lastly, CRATES, with 6 letters, are typically made of wood or plastic and are used to store and transport milk.