Added 10 October 2026 adrenalin noun Categories: The BodyRare Words noun ! Definition from WordNet 3.1, Princeton University. More about adrenalin at Wordnik → Where our words come from → A catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action. Related Words: adrenalineepinephrineepinephrinepirushendorphinexhilarationnoradrenalinendorphinstestosteroneexhilirationnoradrenaline Back to today's word