Source : WordNet®

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