adrenaline noun
or chiefly British adrenalin /əˈdrɛnələn/ or chiefly British adrenalin /əˈdrɛnələn/ Learner's definition of ADRENALINE
[noncount]
: a substance that is released in the body of a person who is feeling a strong emotion (such as excitement, fear, or anger) and that causes the heart to beat faster and gives the person more energy肾上腺素(激动、害怕、愤怒等强烈感情下体内释放的物质,使心跳加快、精力旺盛) ◊ If you experience a rush of adrenaline or an adrenaline rush, you feel very excited and full of energy.亢奋