any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

a gland that secretes oil

any of the glands in the skin that secrete perspiration

any of the glands in the eyes that secrete tears

a large elongated exocrine gland located behind the stomach; secretes pancreatic juice and insulin

either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female