Teamkilling 

The act of killing players on the same team in a game which allows friendly fire. Teamkilling can be intentional or accidental. If it is done intentionally, it's usually out of frustration, boredom, revenge, or to get something that person has.

It is also a form of griefing, and is looked down upon by those who play the game normally.

OMG WTF HOW COME U KEEP TEAMKILLING ME OMG WTF!!!!!!!!1!1!!!11eleven vote him out!!!!1 this D00d is a gay hax0r!

Teamkilling by Rezel August 22, 2008

teamkilling fucktard 

1) Someone who demonstrates the qualities of a fucktard (See definition) before, after, or during the action of killing a teammate in an online game.

2) Caboose, from Red vs. Blue

You teamkilling fucktard! You shot your CO!

teamkilling fucktard by Shadowlings Tear January 29, 2005

teamkilling 

What I spend 95% of my time doing on Call of Duty 4.

Best team killing class in COD4:
RPG
Sonic Boom
Martyrdom

This assholes teamkilling. Everybody file a complaint and get him kicked off xbox live.

teamkilling by Evil Monkey 03 March 17, 2009

Teamkillin 

Ripped beyond all belief.

Stoned Objective To Kill Teammates in Counter-Strike.

A Team In Which Members Smoke Copius Amounts of Mind-Altering/Enhancing Narcotic Substances, Resulting In The Death Of Your Teammates Via Friendly Fire Or Massive Bong Tokes.

"Team...killin......heh heh...."

Teamkillin by Vormav February 26, 2004

Trankiling Bitch 

A person who is rude and has crippling depression in their neck

My best friends boyfriend is a Trankiling bitch

Trankiling Bitch by Chaelove4007 November 30, 2017