(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.

An exocrine gland which secretes a clear fluid known as pre-ejaculate or Cowper’s fluid (colloquially known as “pre-cum”) which is generated upon sexual arousal.

Any specialized gland in some fishes and amphibians that secretes a mucus-like substance containing venomous or acrid material.

The bulbourethral gland.

a specialized gland, located near the eyes or nose of certain marine animals that secretes a liquid having a high salt content; it enables the animal to drink seawater without having to eliminate the excess salt through the kidneys

sweat gland

(anatomy) Any gland that secretes hormones directly into the bloodstream; especially the endocrine gland

(anatomy) The adrenal gland, which is located just above the kidney in humans.