All 6 Uses

adrenaline
in
Hollow City
(Auto-generated)

We broke into an adrenaline-fueled sprint, flying those boats into the cave like they were on rails, while Miss Peregrine hopped lamely alongside us, her broken wing dragging in the sand.†
p. 35.3

adrenaline = “fight or flight” stimulating hormone
If not for the adrenaline flooding my system, the pain would've been totally debilitating.†
p. 68.8 *
Every nerve in my body had gone numb, tingling with adrenaline.†
p. 177.9
She had the glassy look of someone who hadn't slept in days; who was running now on instinct and adrenaline.†
p. 258.2
She was in shock, so she felt no pain, but pretty soon the adrenaline pumping through her system would dissipate, and she'd fade, and be gone.†
p. 281.5
And so I hurried us through as fast as the slowest of us could go, prodding Melina until she barked at me to back off, a steady drip of adrenaline keeping my deep exhaustion at bay.†
p. 293.3

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)