A secretory organ, at the base of a bird's tail, that secretes the oil used in preening.

(anatomy) Any of several exocrine glands that produce saliva to break down carbohydrates in food enzymatically.

(informal) Synonym of lymph node.

(anatomy) Any of several coiled, tubular glands that extrudes part of the cytoplasm as a secretion.

(anatomy, neuroanatomy) A small, pinecone-shaped endocrine gland found near the centre of the brain that produces melatonin.

(anatomy) Any one of four endocrine glands situated in the neck, usually within a thyroid gland, which produce parathyroid hormone.

(anatomy) Any of various glands that secrete hormones directly into the blood or lymph and not through a duct.

(anatomy) An endocrine gland, about the size of a pea, that sits in a small, bony cavity at the base of the brain whose secretions control the other endocrine glands and influence growth, metabolism, and maturation.

(anatomy) A gland in male mammals surrounding the urethra just below the urinary bladder that controls the release of urine from the bladder and produces a secretion that is the fluid part of semen.

(anatomy) A gland of the skin which secretes an oily substance, sebum, usually into a hair follicle near the surface of the skin.