名詞 eta:

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 on independent homeland in Spain's western Pyrenees
   同義詞：Basque Homeland and Freedom, Basque Fatherland and Liberty, Euskadi ta Askatasuna
2. the 7th letter of the Greek alphabet

e.ta

n.（名詞）
The seventh letter of the Greek alphabet.See table at alphabet
希臘語的第七個(gè)字母參見 alphabet

來源：
Greek ôta [of Phoenician origin] ; akin to Hebrew ôôt [heth]
希臘語 ôta [具有腓尼基語的根源] ；類似于 希伯來語 ôôt [希伯來文的第八個(gè)字母]