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|Noun||1.||twin towers - twin skyscrapers 110 stories high in New York City; built 1368 feet tall in 1970 to 1973; destroyed by a terrorist attack on September 11, 2001|
act of terrorism, terrorism, terrorist act - the calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear