1. (Science: anatomy) The glandular organ in which milk is secreted and stored; popularly called the bag in cows and other quadrupeds. See mamma. A lioness, with udders all drawn dry. (Shak)
2. One of the breasts of a woman. Yon Juno of majestic size, With cowlike udders, and with oxlike eyes. (pope)
Origin: oe. Uddir, AS. Uder; akin to D. Uijer, g. Euter, OHG. Utar, utiro, Icel. Jugr, Sw. Jufver, jur, dan. Yver, L. Uber, gr. Oy^qar, Skr. Udhar. 216. Cf. Exuberant.