All 7 Uses

adrenaline
in
The Girl on the Train
(Auto-generated)

I couldn't catch my breath, my heart was racing, I felt that lurch in my stomach, like when you've taken a pill and you're just about to come up, that punch of adrenaline that makes you feel sick and excited and scared all at once.†
p. 56.9

adrenaline = “fight or flight” stimulating hormone
It's not just the anticipation of solitude, though, it's the excitement, the adrenaline.†
p. 124.2
That adrenaline and booze buzz I had earlier on would have been long gone.†
p. 128.8
I could feel the blood pulsing in my neck, sweat at the base of my spine, the sickening rush of adrenaline.†
p. 149.1 *
Flooded with dread and adrenaline, I see darkness coming.†
p. 164.8
I've been shaking like this for hours, it must be the adrenaline, my heart just won't slow down.†
p. 234.1
It lights up and I can feel the adrenaline in my blood, it's making me dizzy, a little bit sick, and it's making me buzz, as though I'm high.†
p. 356.4

Definitions:

(1) (adrenaline)
“fight or flight” stimulating hormone secreted by the adrenal gland in response to stress (making the body feel excited and ready for action)

Doctors are more likely to use the term epinephrine (possibly shortened to epi or EP). Adrenalin as a proper noun without the ending "e" is a trademark name for the same chemical.
(2) (meaning too rare to warrant focus)