adrenal gland

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Either of two small, dissimilarly shaped endocrine glands, one located above each kidney, consisting of the cortex, which secretes several steroid hormones, and the medulla, which secretes epinephrine.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun anatomy In mammals, either of a pair of complex endocrine glands, situated above each kidney, secreting hormones which control the heart rate, blood pressure, and metabolism.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun either of a pair of complex endocrine glands situated near the kidney