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WordNet (r) 3.0 (2006) (WordNet)

ETA
n 1: a terrorist organization organized in 1959 by student
activists who were dissatisfied with the moderate
nationalism of the traditional Basque party; want to create
an independent homeland in Spain's western Pyrenees; "in
1968 ETA launched a campaign of political assassinations of
government officials" [synonym: {Basque Homeland and Freedom},
{Basque Fatherland and Liberty}, {Euskadi ta Askatasuna},
{ETA}]
2: the 7th letter of the Greek alphabet