コロンバイン高こう校こう銃じゅう乱らん射しゃ事じ件けん

noun

Columbine High School massacre

Refers specifically to the shooting that occurred on April 20, 1999, in Colorado, USA. Used as a proper noun in Japanese media and discussions.

• コロンバイン高こう校こう銃じゅう乱らん射しゃ事じ件けんは、アメリカの学がっ校こう安あん全ぜんに大おおきな影えい響きょうを与あたえた。

  The Columbine High School massacre had a major impact on school safety in the United States.