'Eunuch' in the Bible

So the king of Assyria sent the commander in chief, the chief eunuch, and the {chief advisor} from Lachish to King Hezekiah at Jerusalem with a heavy army. They went up and came [to] Jerusalem, then they went up and came and stood at the aqueduct of the upper pool which is on the main road of the {washer's} field.

He kept the horses that the kings of Judah had dedicated to the sun from coming to the temple of Yawheh at the side room of Nathan-Melech the eunuch, which [was] in the court; and the chariots of the sun he burned with fire.

Then the king of Israel called to a eunuch and said, "Quickly bring Micaiah the son of Imlah."

Let the king appoint chief officers in all the provinces of his kingdom, and let them gather every attractive young virgin to the {harem} in the citadel of Susa {under the care of} Hegai, the king's eunuch, who is in charge of the women; and let him give [them] their beauty treatment.

In the evening she would go and in the morning she would return to the {second harem} {under the care of} Shaashgaz, the king's eunuch in charge of the concubines. She would not go back to the king unless the king delighted in her and she was called by name.

When the turn came near for Esther daughter of Abihail the uncle of Mordecai, who had taken [her] as a daughter, to go to the king, she did not ask anything except what Hegai the eunuch of the king who was in charge of the women, advised. And Esther carried favor in the eyes of everyone that saw her.

And do not let the {foreigner} [who] joins himself to Yahweh say, "Surely Yahweh will separate me from his people." And do not let the eunuch say, "Look! I [am] a dry tree!"

When Ebed-melech the Cushite, {a eunuch} who [was] in the house of the king, heard that they had put Jeremiah into the pit--now the king [was] sitting at the Gate of Benjamin--