The name Hadassah in the Bible
The name Hadassah occurs only once in the Bible, in Esther 2:7, which reads: "...and he [Mordecai] was bringing up Hadassah, that is Esther, his uncle's daughter..."
Etymology of the name Hadassah
Scholars agree that the name Hadassah is a feminized form of the word הדס (hadas), meaning myrtle:
BDB Theological Dictionary, NOBSE Study Bible Name List and Jones' Dictionary of Old Testament Proper Names unite in rare agreement and read Myrtle for the meaning of the name Hadassah .