What is the meaning of name 'Esther'?

A number of etymologies are possible.

1) Esther comes from the Persian "setareh," meaning "star".2) Esther comes from the Aramaic "istahar," meaning "moon." Beautiful as the moon (Talmud, Megillah 13a).

3) Esther comes from the Semitic root aθtar (ath-tar), "morning star." There is support for this too in the Talmud (Yoma 29a).

4) Esther comes from the Median "astra," meaning "myrtle." The book of Esther (2:7) states that she had both names, Esther and Myrtle (Hadassah in Hebrew).