The origin of the name Vashti is Hebrew
This is how Vashti is written in Hebrew:
וַשְׁתִּי = Vashtiy
The biblical meaning of the name Vashti is beautiful.
Vashti was the queen, wife of Ahasuerus, whom he divorced for disobeying his orders
The name Vashti appears in the bible in the following verses:
Esther 1:9 KJV
Also וַשְׁתִּי (Vashti) the queen made a feast for the women in the royal house which belonged to king Ahasuerus.
Esther 1:11 KJV
To bring וַשְׁתִּי (Vashti) the queen before the king with the וַשְׁתִּי (Vashti) royal, to shew the people and the princes her beauty: for she was fair to look on.
Esther 1:12 KJV
But the queen וַשְׁתִּי (Vashti) refused to come at the king’s commandment by his chamberlains: therefore was the king very wroth, and his anger burned in him.
Esther 1:15 KJV
What shall we do unto the queen וַשְׁתִּי (Vashti) according to law, because she hath not performed the commandment of the king Ahasuerus by the chamberlains?
Esther 1:16 KJV
And Memucan answered before the king and the princes, וַשְׁתִּי (Vashti) the queen hath not done wrong to the king only, but also to all the princes, and to all the people that are in all the provinces of the king Ahasuerus.
Esther 1:17 KJV
For this deed of the queen shall come abroad unto all women, so that they shall despise their husbands in their eyes, when it shall be reported, The king Ahasuerus commanded וַשְׁתִּי (Vashti) the queen to be brought in before him, but she came not.
Esther 1:19 KJV
If it please the king, let there go a royal commandment from him, and let it be written among the laws of the Persians and the Medes, that it be not altered, That וַשְׁתִּי (Vashti) come no more before king Ahasuerus; and let the king give her royal estate unto another that is better than she.
Esther 2:1 KJV
After these things, when the wrath of king Ahasuerus was appeased, he remembered וַשְׁתִּי (Vashti) , and what she had done, and what was decreed against her.
Esther 2:4 KJV
And let the maiden which pleaseth the king be queen instead of וַשְׁתִּי (Vashti) . And the thing pleased the king; and he did so.
Esther 2:17 KJV
And the king loved Esther above all the women, and she obtained grace and favour in his sight more than all the virgins; so that he set the royal crown upon her head, and made her queen instead of וַשְׁתִּי (Vashti) .