Columbiner noun1 •(slang) One who idolizes the perpetrators of the Columbine High School massacre, with this fascination often expressed on social media in a fandom-like way.Maybe that's what was truly frightening about the Columbiners—not their veneration of Harris and Klebold, but what they articulated about themselves through their very public devotion. — 2020 formsColumbiners
