Ethnah \e-th-nah\ as a girl's name is a variant of Aithne (Gaelic) and Eithne (Irish, Gaelic), and the meaning of Ethnah is "fire; kernel".

The baby name Ethnah sounds like Ethnee, Ethnea, Ednah, Eddnah and Etana. Other similar baby names are Elanah and Etha.