eta

(in Japan, formerly) a member of a class of outcasts who did menial and dirty tasks

Euzkadi ta Askatsuna: an organization of militant Basque nationalists attempting to gain independence for the Basques, esp those ruled by Spain, until a ceasefire in 1998, by means of guerrilla warfare

the seventh letter in the Greek alphabet (Η, η), a long vowel sound, transliterated as e or ē