9-11

English Thesaurus

1. the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs (noun.time)

instance hypernym	:	terrorist attack,
definition	:	a surprise attack involving the deliberate use of violence against civilians in the hope of attaining political or religious aims (noun.act)

part meronym	:	sep, sept, september,
definition	:	the month following August and preceding October (noun.time)

domain category	:	act of terrorism, terrorism, terrorist act,
definition	:	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 (noun.act)