'Unsexed' in the Bible

On the seventh day, when the heart of the king was glad with wine, he gave orders to Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar, and Carcas, the seven unsexed servants who were waiting before Ahasuerus the king,

In the evening she went, and on the day after she came back to the second house of the women, into the keeping of Shaashgaz, one of the king's unsexed servants who had the care of the king's wives: only if the king had delight in her and sent for her by name did she go in to him again.

Then Esther sent for Hathach, one of the king's unsexed servants whom he had given her for waiting on her, and she gave him orders to go to Mordecai and see what this was and why it was.

Then Harbonah, one of the unsexed servants waiting before the king, said, See, the pillar fifty cubits high, which Haman made for Mordecai, who said a good word for the king, is still in its place in Haman's house. Then the king said, Put him to death by hanging him on it.