9-11

noun

the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs

• Syn: ↑9/11, ↑September 11, ↑Sept. 11, ↑Sep 11

• Topics: ↑terrorism, ↑act of terrorism, ↑terrorist act

• Instance Hypernyms: ↑terrorist attack

• Part Holonyms: ↑September, ↑Sep, ↑Sept