Quick definitions from WordNet (9-11)
▸ noun: the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
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▸ noun: the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs
▸ Words similar to 9-11
▸ Usage examples for 9-11
▸ Popular adjectives describing 9-11
▸ Words that often appear near 9-11
▸ Rhymes of 9-11
▸ Invented words related to 9-11