English

adrenaline noun definition in Excitement topic from the Oxford Advanced Learner's Dictionary

adrenaline

 noun: Excitement topic
a substance produced in the body when you are excited, afraid or angry. It makes the heart beat faster and increases your energy and ability to move quickly. The excitement at the start of a race can really get the adrenaline flowing. a rush/surge of adrenaline A shot of adrenaline was given as an antidote to the wasp sting.