1.baskien itsenäisyyttä tavoitteleva, vuonna 1959 perustettu terroristijärjestö
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"