Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: 9-11
  1. The day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
    - September 11 attacks, 9/11, September 11, Sept. 11, Sep 11

Type of: terrorist attack

Part of: Sep, Sept, September

Encyclopedia: 9-11