Definition: It's a reference to an event in 2009, on which exactly one person was killed. The definition varies depending on context, but here are some common meanings: - An event in history or literature: - "2009112001" refers to the year and month of a particular historical event. - It's like saying "in 2009 when there was an event on December 20th," but with a different context. - A personal life or moment: - "2009112001" is about a person who lived in that year and died on the same day. - It's like saying "I remember a specific time in my life when I was born in 2009." - A phrase or term used to emphasize something: - "2009112001" is often used to call attention to something that happened during the year and has led to widespread attention. Please note that these definitions may vary depending on the specific context and the usage of "2009112001".