One who kills (either accidentally or purposefully) a member of his or her own team. Someone who should be killed themself. often used after a lasertag game with friends, during a counterstrike or halo game, or any of the other FPS or gun-related team games.
Damnit, you team killing fucktard, Watch where you're shooting!
A more sensational term for a military base. An example of how the televised news often tries to drub up interest in an upcoming segment by making something out of nothing.
Tonight, on "Eye on Springfield": just miles from your doorstep, hundreds of men are given weapons and trained to kill. The government calls it the "army", but a more alarmist name would be The Killbot Factory."---Kent Brockman, in the Simpsons episode titled "Homer Loves Flanders