All 9 Uses

adrenaline
in
School's Out - Forever
(Auto-generated)

You want an adrenaline rush?†
Chpt 1-10 *

adrenaline rush = the intense feeling that comes from an increase in the "fight or flight" hormone
You want an adrenaline rush?†
Chpt 1-10
Here we go, I thought, feeling adrenaline speeding up my heart.†
Chpt 1-10

adrenaline = “fight or flight” stimulating hormone
I felt my muscles tighten, a new, unwelcome flood of adrenaline icing its way through my veins.†
Chpt 11-20
I felt like adrenaline was pouring into my system, making me so jumpy I couldn't stand it.†
Chpt 11-20
I began breathing fast, the adrenaline jump-starting my heart.†
Chpt 31-40
I've been running on adrenaline, without a master plan.†
Chpt 101-110
My stomach was roiling, and adrenaline sang in my blood.†
Chpt 131-142
I was still totally hyped up on adrenaline, my nose was still bleeding, and I felt like kicking more butt.†
Chpt 131-142

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)