noradrenaline: a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
vasoconstrictor: any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
magician: someone who performs magic tricks to amuse an audience