pituitary gland

Definition of pituitary gland
National Cancer Institute

pituitary gland

(pih-TOO-ih-TAYR-ee...)
A pea-sized organ attached to the part of the brain called the hypothalamus. It lies at the base of the brain above the back of the nose. The hypothalamus sends signals to the pituitary gland, which then makes hormones that control other glands and many of the body’s functions, including growth and fertility.

Source: NCI Dictionary of Cancer Terms