A surge of strength and energy brought on by a dangerous situation, by, or as if by, adrenaline.(noun)
An event or activity which causes such.(noun)
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Use "adrenaline rush" in a sentence
"Many of Andy Tilp 's Generation X and Y clients live for the adrenaline rush they get from outdoor sports like snowboarding and white-water rafting."
"The sight of her body soap-slicked and naked combined with the sound of her scream of peril adding to the adrenaline rush to kill whatever had attacked her was an extreme confluence impossible to process."
"But after the first few hours the adrenaline rush faded to be replaced by constant nausea, fatigue, and a terrible tiredness."