Udder

(n.) The glandular organ in which milk is secreted and stored; -- popularly called the bag in cows and other quadrupeds. See Mamma.

Udder - Other Definitions

(n.) The glandular organ in which milk is secreted and stored; -- popularly called the bag in cows and other quadrupeds. See Mamma.
(n.) One of the breasts of a woman.