In Canada and the United States, a "gunner" is slang for a hyper-competitive student, usually a medical, nursing, legal, or dental. Gunners will do whatever it takes to be the best. This ranges from working very hard to sabotaging peers. The gunners are normally either concerned with getting into a professional school or excelling in the professional school to continue on to a specialty.
The top student in your class, anyone sitting in the front row, anyone who uses a three colored pen in university/college.

Gunner: *Gives correct answer no one else knew*

Average college student: "Of course he/she knew the answer, he/she is such a 'Gunner'!"
by GradeE November 10, 2013
Get the Gunner mug.
To turn a heterosexual person into a homosexual person; normally relating to girls.

Homosexual Recruiter
Dude, she was totally straight before but since she met her she got totally Gunnerized and now dates girls.
by TR8IN October 1, 2008
Get the Gunnerize mug.
A Gunner is usually a very competitive person. Most uses are in the context of a highly competitive and sabotaging medical student.

For example, a medical student who claims he doesn't study and wants a non-competitive speciality like internal medicine while he is preparing for plastic surgery.

Basically, someone working hard in the background.
Hey, did you study that lecture? No? Don't listen to Mohammed again it is included in the final, he is such a Gunner!!
by Subsaharan May 2, 2019
Get the Gunner mug.
Slang term for the 80s band, Guns'n'Roses.
A:I was listening to some Gunners the other day.
B: Rad dude. Slash is a god.
by katie March 27, 2005
Get the Gunners mug.
basicilly a kid with a huge dick. looks great, smells great, and all the ladies want him. great at sports also. great sense of humor.
Man i love a real Gunner.
by annoyingbot6788 February 8, 2018
Get the Gunner mug.
A gunner is a man who is in jail or prison who starts to masturbate and/or ejaculate while non-inmates, guards or visitors walk by his cell. A gunner can also be seen in the background when you are talking to someone who is in jail via video visitation. The gunner will be seen masturbating and/or ejaculating on the tv screen.
When i walked through F-Pod at the jail, i was almost shot in the face by a gunner!
by DEFENDER85 April 15, 2011
Get the Gunner mug.
A hot guy that will act stupid in school but still manage to pass. Gunner will also get any girl and date 1 or 2 girls a lot. Gunner has a giant dick.
by ClioStalker August 8, 2014
Get the Gunner mug.