Source : Webster's Revised Unabridged Dictionary (1913)

Adrenal \Ad*re"nal\, a. [Pref. ad- + renal.] (Anat.)
   Suprarenal.

Source : WordNet®

adrenal
     adj 1: of or pertaining to the adrenal glands or their secretions
     2: near the kidneys

adrenal
     n : either of a pair of complex endocrine glands situated near
         the kidney [syn: {adrenal gland}, {suprarenal gland}]