1: a large pendulous organ consisting of two or more mammary glands enclosed in a common envelope and each provided with a single nipple — see cow illustration
: the bag-shaped part of a cow, goat, etc., that hangs below the belly and produces milk
udder
noun
ud·der|\ ˈə-dər\
Kids Definition of udder
: a large bag-shaped organ (as of a cow) enclosing two or more milk-producing glands each draining into a separate nipple on the lower surface
udder
noun
ud·der|\ ˈəd-ər\
Medical Definition of udder
: a large pendulous organ in various mammals and especially a female domestic bovine consisting of two or more mammary glands enclosed in a common envelope and each provided with a single nipple