1911 Encyclopædia Britannica/Sweetbread

SWEETBREAD, a popular term for certain glands of animals, particularly when used as articles of food; these are usually the pancreas, the “stomach-sweetbread” of butchers, and the thymus, or “breast sweetbread.” The term is also sometimes used to include the salivary and lymphatic glands (see Ductless Glands, Pancreas and Lymphatic System).