eta

(noun) 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. Synonyms: Basque Homeland and Freedom, Basque Fatherland and Liberty, Euskadi ta Askatasuna, ETA. Example: "In 1968 eta launched a campaign of political assassinations of government officials."

(noun) the 7th letter of the Greek alphabet.