Top Definition
To attempt to waste many people in your school.
On April 20, 1999, in the suburban town of Littleton, Colorado, two high-school seniors, Dylan Klebold and Eric Harris, enacted an all-out assault on Columbine High School during the middle of the school day. Shooting guns and throwing bombs, the two boys killed twelve students and one teacher and injured many more. That is columbining.
by Cyniper July 22, 2006
To attempt to waste many people in your school.

On April 20, 1999, in the suburban town of Littleton, Colorado, two high-school seniors, Dylan Klebold and Eric Harris, enacted an all-out assault on Columbine High School during the middle of the school day. Shooting guns and throwing bombs, the two boys killed twelve students and one teacher and injured many more. That is columbining.
by Cyniper July 26, 2006
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