脑垂体 nǎochuítǐ pituitary gland Definitions Defs Origin Strokes Stroke Words Sentences Sents 脑 腦 nǎo noun brain The brain of a person or animal; the organ in the head that controls thought and movement.垂体 垂體 chuítǐ pituitary gland The pituitary gland or hypophysis; an endocrine gland at the base of the brain that regulates growth and metabolism.