Definitions

1. noun

A hormone secreted by the adrenal glands in response to stress or excitement, which prepares the body for emergency action by increasing heart rate, blood pressure, and energy.

“The thrill of skydiving gave her a rush of adrenaline.”

2. noun

A stimulating or exciting experience or situation.

“The concert was a rush of adrenaline for the entire audience.”

3. noun

A substance that causes a strong feeling of excitement or energy.

“The new energy drink contained a stimulating dose of adrenaline.”